Chris Brown (center) in costume with friends (via Twitter)

For most Americans, terrorism is no laughing matter. But apparently, controversial R&B star Chris Brown and his friends find humor in trafficking in cultural stereotypes and offensive imagery.

TMZ has obtained photos of Brown and several others dressed as Taliban-style terrorists for a Halloween party reportedly hosted by his former girlfriend Rihanna in West Hollywood.

Brown’s costume came complete with spare bullets and a traditional Arah headdress.

“Ain’t nobody F**king wit my clique!!!!” Brown tweeted before posting the photo above.