OK. What are your thoughts on what should be done?
1) Change the electoral system to Proportional Representation
This would allow more sensible politicians with more sensible policies aimed at what people actually want, rather than what the loudest want, or the ones with the most money
2) More restrictions on guns that actually make sense.
Switzerland has a much lower rate of murder than the US, 10 times lower. There are a variety of reasons for this, and PR might help to solve some of them. Having gun owners responsible for their weapons, better storage, punishment for misuse.
3) Deal with ghettos, poverty, the cycle of poverty and crime which leads to a lot of the crime. Change the attitude of people for one of dog eat dog, to one where things work better.
I could give lots of suggestions, but a pro-active government that actually works for the people and not against the people, and making laws to make people's lives better, not worse, would be a start.