Sounds to me like you should move. A home invasion, a mugging and an armed robbery... Where do you live, south central Los Angeles? I also think it's pretty telling that a black person has to "prove" his character to you before you consider him anything more than a potential mugger.
In a nice area of Philadelphia; but every mugging was in the center of town in broad daylight. I did move finally.
You're exaggerating about the rest. I'm just not as friendly to one and all on the street as I used to be, having grown up in the south where everyone makes eye contact and nods or says hello. Now, the windows stay rolled up with the air conditioner on if I'm in the car (ever since the drug addict put an automatic in the window as I paused at a street light), and I keep my eyes to myself on the street. Three strikes is enough for me.