EEK!! I don't think I'd go knocking on doors asking about crime! You just don't know what you're opening yourself up to!!
And, another thing people don't know about real estate agents is that it's improper for us to be discussing whether there is high/low/good/bad crime occurring anywhere. We have a certain standard to uphold as far as discrimination, so we really can't discuss crime rates or any other similar variables about the make up of a neighborhood.
It could be perceived that WE are trying to make a decision for YOU about what's acceptable and what isn't. It's important for you to seek out information on your own to find out what makes YOU comfortable. Your tolerance for what's OK and not OK might be TOTALLY different than what I think. And, I'd never want you to substitute my opinion for yours.