I have two teen boys and a younger primary aged girl. We were watching Hunted and some of the fugitives were hitch hiking close to where we live. I was asked if I would have picked them up. Given the presence of a camera crew I agreed I might - but without the crew I would never have picked up two males with just me and my daughter in the car due to fears for our safety.
At this point I'm accused of being sexist. I point out that men are generally more violent, more likely to be convicted of violent offences etc. That while I might stand a chance against a woman I would not against a man. Interestingly the reverse situation of DH saying he would not pick up two female hitch hikers in case of a false accusation was not an issue for the boys.
I appreciate I don't speak for all women but I know if I'm out alone walking my dog on the common or walking back from the pub at night, or going for a run, I'm wary of men. How do you explain that fear to your own sons?