Why can't bullies be sued or arrested for harassment?

I'm so tired of reading news stories of teenagers, overweight people and anyone else with a perceived handicap being bullied or harassed. I'm more tired of seeing comments stating, "we need to do something" or "we should do something about it". Alright, here's an idea: Arrest the offenders, right on the spot, point blank! Have them live in the other person's shoes, with no time off for good behavior. If the offender is an adult, they should serve 1 year; if the offender is another teenager, they should serve 3-6 months. If the parents complain about it being "unfair", 1 year is tacked on to the offender's sentence, and the parents have to serve the same sentence for 1 year, because they didn't do their job teaching their child compassion.

This is non-negotiable, there are no second chances. Jail doesn't work for serial murderers and rapists; why do bullies just get a slap on the wrist and told to go on their merry way, leaving the harassed person out there to fend for themselves? Free counseling should be provided for the harassed person, no matter how long it takes.