If you're going to speak at a rally at a high profile rally with Rev. Al Sharpton on how the #BlackLivesMatter movement is peaceful, it's best not to wear that same outfit when lighting a convenience store on fire.

KSDK reported that Joshua Williams, a 19-year old #BlackLivesMatter activist was arrested last December and pleaded guilty to charges of arson, stealing, and 2nd-degree burglary. He was sentenced to 8 years in prison on December 10.

Williams was a prominent figure in the #BlackLivesMatter movement in Ferguson, Mo. MSNBC did a wonderful profile of Williams portraying him as an example to the movement, and he was even flown to Washington D.C., where he was a speaker at a rally organized by Rev. Al Sharpton.

RELATED: YAF Poll says 7-in-10 college students think #BlackLivesMatter is anti-police

According to Gateway Pundit, the convenience store video cameras showed that he was wearing the same outfit during the arson and burglary as he was wearing during his speech in D.C.