ACAB (All Cops Are Bastards)
The acronym ACAB stands for 'All Cops Are Bastards' and is a slogan of long standing within skinhead subculture, which borrowed it from the punk subculture. Because non-racist skinheads (including "traditional" skinheads and anti-racist skinheads) may use this acronym as well as racist skinheads, it should be carefully judged in the context in which it appears.