World's Biggest Problems

1. Corruption in the government. Big business, gorged on wealth and an almost unlimited supply of money when compared to the funds of "normal people," are able to control the actions of government officials through lobbying and paying for their campaigns. This is a problem because of course big business doesn't have the best interests of the common man at heart, but at furthering their own profits with little regard for anything else. It would be hard to completely eradicate this without tons of arguments regarding the freedom of speech and freedom to campaign for who you like, but I believe we could make great strides by limiting the amount of money people and corporations like big lobbying groups are allowed to donate. This would even the playing field for sure. 
2. Global warming. Due to the mass amounts of people on the planet, the Earth is experiencing temperature change at such a rapid rate that is has never before been recorded in the entirety of human history. This is due to a huge cocktail of things, so there is no one simple solution, but reducing carbon emissions from big factories, cars, and most importantly radically reducing the amount of meat and dairy products that the average American consumes would help a lot. The methane and forest destruction that comes from agribusiness is unparalled, and as changes in methane can be seen rapidly in the atmosphere, this would be a quick, noticeable difference. Of course, meat and dairy products are a part of the American way of life - with more countries, like China, deciding they too want to live that diet - and it's very hard to get people to change their lives like that. 
3. Police brutality. While of course not all police officers are guilty of excessive force, there is a large enough grouping that makes this problem relevant and important. The culture of the police force is a toxic one - "us against them," when really it should be the police helping the people of the county. Of course in circumstances where they are being attacked, it is 100% okay to attack back, but there is an almost systematic use of police force, leading to unnecessary murders, of predominantly black citizens going about their day. In order to eradicate this, we would need to change the police culture, educate police officers on racism, and make them more liable in the court of law when using excessive force, as I believe we have seen many examples of in the past.
4. The American court system. Like police brutality, we have a system in place that makes it so rich, white citizens receive lesser punishments than poor minorities. In addition to this, the cost of a good lawyer to have a fighting chance against the state is much more than most people can pay. In order to fix this, we would really have to dismantle the entire system and start over, somehow finding a way to lower attorney fees and prejudice against minorities. 
5. Overpopulation in jails. Going off the court system, we have criminalized drug laws to the point where people with three marijuana offenses can now constitutionally face life in prison. This is not only cruel and unusual, but results to a huge overcrowding of the jail system. The United States incarcerates more of it's own citizens than any other country in the world. This is due to privatized prisons who want more people in their beds so they can make more money. In order to fix this, we need to reduce privatized prisons and also repeal these ridiculous drug laws, including changing the three strikes law to violent felonies only. 
6. World hunger. At any given moment, one billion people in the world are starving. Meanwhile, people in the US and other first-world countries are eating so much we gorge ourselves on food and weigh 600 pounds. However there is no real easy solution to this problem. If the UN decided to just donate tons of food, the governments of the corrupt countries would just take it for themselves. It would take more than just someone donating bags of rice to eradicate global hunger. 
7. Donald Trump. I seriously believe that Donald Trump is promoting terrorism in the United States. Through fear-mongering, he has been able to brainwash a contingent of the population who honestly believe we should make all American Muslims wear letters on their clothes - how is this NOT literally when Hitler did? His extreme misunderstanding on virtually all topics, belligerent attitude toward minorities and woman, and overall disgusting ideas make the United States - one of the most powerful countries in the world - look absolutely stupid, and the idea of him in office is just too terrifying to comprehend. If Trump had access to nuclear codes, it wouldn't be long before World War III out. To stop this, people need to realize that he's a terrible, terrible person and stop supporting him in the polls. Let him fade back into irrelevance. 
8. Global terrorism. While Donald Trump may have the idea of it completely wrong, there is no denying it is a huge problem. The recent horrifying Paris attacks have shown that they can infiltrate anywhere and are completely ruthless in their pursuit of death. For this problem, I really don't know what the answer is. But I think a good place to start is to bring education to the impoverished countries where terrorism grows. Instead of chopping off the heads, that grow back just like the hydra, we should be preventing the ideals from ever being able to take root and spread. 
9. Wealth disparity. There is a shrinking middle class in the United States. The top 1% of the country has as much money as the other 99% combined. That is an exorbitant amount of money and disparity, mostly due to big business again gorging themselves on profit and big bonuses, and evading tax payments. I'm not sure what the answer to this problem is, but I know if these people with billions of dollars had to pay the proper taxes it would at least be a lot more fair to the rest of the country. 
10. Homeless war veterans. While homelessness in general is a growing problem in the US, a large population of the homeless people we see are former war veterans. It honestly sickens me that this country is capable of having men give their lives to the service, and then when they return home just toss them like yesterday's trash. With the budget the US army has, we should absolutely be able to provide more benefits to the men and women who have served this country.