June 26, 2004 -- A man with more than 50 arrests on his record in the past 20 years was busted again for brutally assaulting a woman on a Brooklyn street and trying to cut off her breast with a knife, police said yesterday. Riley Williams, 44, was arrested Wednesday after he attacked a woman around 11:45 p.m. near 329 Monroe St. in Bedford-Stuyvesant.