IRVINGTON - (AP) - Four northern New Jersey police officers face internal affairs charges because of rap videos they appeared in while off duty.

Irvington Police Director Joseph Santiago tells The Star-Ledger that Maurice Gattison, president of the city's police union, and three other decorated officers were recently charged with conduct unbecoming a police officer. If found guilty, they could lose their jobs.

Gattison is an 18-year veteran of the force who performs under the name "Gat the Great."

The video for the song "Temper Like an Alcoholic" features him rapping homophobic lyrics and promoting violence. In another, Gattison refers to himself a "felon for life."

Some city officials and critics have called for the officers to be fired. But others say Garrison's lyrics could be protected under the First Amendment.