They usually grab from real far away, and after you've passed, so they have plausible deniability. Groping another man is an act so sick that it's really a plea for help (even if it's hidden behind a veil of plausible deniability). Letting himself be identified groping another man is an exceptionally loud plea for help. The guy is begging for you to help correct his sick behavior. Kick the sh1t out of him.
Legally, grabbing someone is assault. Grabbing an ass is also sexual assault. You have every right to defend yourself from what you believe will be coming next. Kick the sh1t out of him.
Legally, making a grab for a man's wallet is attempted robbery. If you feel him grab or hit at you while doing it, it's mugging (aggravated robbery). You have every right to defend yourself from what you believe will be coming next. Kick the sh1t out of him.
In the real world, disrespecting another man earns a swift and violent response. He disrespected you. Kick the sh1t out of him.
the_stig, you are wrong and you couldn't be more wrong. ElStud was the one who was violently attacked. The groper is the one who risked physical retribution and serious legal problems. The groper is the one who has mental issues.
moneyisking and the_stig, you two sound like faggots. You're defending a self-hating man-hater who tried to emasculate a DJ because he appeared to be confident and successful in courting women. You two need to get your heads out of the feminist toilet. You two seriously need to man up. Maybe go get jobs in construction and throw away your computers and smart phones.