The U.S. has plenty of gun control and these problems are at a tolerable level and most of them dropping. Those which are not dropping will only get worse as citizens are dis-armed.
What is a tolerable level of gun crime, accidental gun deaths, gun suicides, and police shootings? That seems like a ridiculous statement. How much gun violence is okay in your mind? Is it tolerable until your kid accidentally shoots your wife? Is it tolerable until the cops start shooting at you? Where can you draw the line? I don't think any of those statistics should be tolerable. Everything should be done to get them as close to 0 as possible.