Company owner sexually harasses and discriminates

I work for a small company where the owner sexually harasses the females in the office by staring, touching, etc. No one that is currently employed there will bring anything to his attention for fear of losing their job. When a female ex-coworker brought up issues when she quit, he immediately said that she brought up things that could harm his business-he admitted it. There is total male favortism with wages, promotions, and overtime. These subjects are our main topic during breaks, mostly how uncomfortable we feel in that office. We are all younger females (mostly under 25) and feel taken advantage of. I just need to know what I can do. I am not even really interested in money, I just want him to get in trouble.