Madison is a safe city. I went to undergrad here/still live here. The recent unsolved murders are very disturbing, and a lot of people in the community are very upset. But, that's kind of indicative of the fact that this type of crime hardly ever happens here.
Bad people are everywhere, crime happens everywhere...and statistically, you're going to be safer in Madison than mannnnnny other places.
I have always felt safe b/c I've lived in big apartment complexes that are secure and have cameras, etc. They are more expensive than little old houses on Mifflin, for example, but they're nicer and I like the peace of mind with the cameras.
Don't let these isolated events sway you against coming here, Madison is an awesome place to go to school. (I'm not staying here for law school, but has nothing to do with crime)...