During a protest rally for Trayvon Martin on Tuesday night, July 16th, in Leimert Park, Ca, Nipsey Hussle was searched by police after they suspected him of withholding a firearm.  

According to TMZ, LAPD cops allegedly saw Nipsey "doing something" that made them suspicious.  After being handcuffed, they searched him and his vehicle and determined that he did not have a gun in his possession, at which point they let him go on his way.

Source: tmz.com