I'm not saying there are no exceptions.
If I asked 'what are signs of a bad man?' And someone said 10 years of prior incarceration st a federal prison.
Would you say: 'The OP is a classic "judge a book by its cover" attitude, I know some people who are reformed offenders and some who were wrongfully convicted'
You'd be right. Some are reformed and wrongfully convicted - but just to be on the safe side, you probably don't want your daughter bringing back back Manuel 'The Massacre' Ortiz.
I'm sure the 7 tear drop tattoos were just youthful folly too.