look, for ****s sake.
nowhere is actually dangerous unless you are:
a) hanging around (or in the vicinity of) a lot of drunk obnoxious people
b) going into areas you you probably shouldnt
c) an idiot who doesn't know when to walk away.
granted, I've been guilty of all of these (apart from c); but they are fairly avoidable. I have been all over the country and seen very little difference between the major city centres as far as "violence" goes. As long as you only count violence that could actually involve you (not gangs etc).
of course, i haven't been to glasgow
