Black Lives Matter activist and failed Baltimore mayoral candidate DeRay McKesson got a disappointing birthday present on Saturday night: he was arrested during an anti-cop protest in Baton Rouge, Louisiana.

McKesson was arrested around 11pm in what two fellow activists said was a violent takedown, according the Washington Post.

“The officers won’t give their names,” said fellow activist Brittany Packnett to WaPo. “He was clearly targeted.”

Police were trying to keep organizers from blocking traffic and warned anyone that if they went into the street they'd be arrested, one officer in particular singled out McKesson and gave him an individual warning not to protest in the street.

Only problem was that there was no sidewalk, protests stood on the shoulder of the road chanting "no racist police."

At the time of his arrest, McKesson was livestreaming the entire protest and said that police were provoking people by being out in full force and shining their car lights into the crowd. At that time two police officers tackled the activist to the ground and arrested him.

It's still unclear what charges will be brought against McKesson, possibly because he was on the shoulder of the street or antagonizing the crowd by yelling about the police.

While he was in custody, the Black Lives Matter activist texted that he and 33 other protesters were arrested.

Supporters on Twitter immediately responded with #FreeDeRay, where they compared McKesson to Martin Luther King Jr.; it soon became the most tweeted hashtag.

Called BRPD to demand release of @deray. Cop said I was preventing them from taking real calls & "transferred" me to a dial tone. #FreeDeray — David Slack (@slack2thefuture) July 10, 2016

Before we go comparing Civil Rights leaders. Let's remember that MLK was arrested 30x between 55 and 65. #FreeDeray pic.twitter.com/Er3abwap2z — Joshua Grant (@Positivity_2016) July 10, 2016

It's all so awfully similar to the 50/60s again. I hate this. #FreeDeray https://t.co/jHibOmDvrz — Chantelly ✨17✨ (@itschantelly) July 10, 2016

Y'all know how many times MLK was arrested and targeted simply for being a leader. It means you're doing something right. #FreeDeray — Teri Flower (@Teri_jelks) July 10, 2016

McKesson's detractors didn't share the same opinion of the Black Lives Matter activist.

#FreeDeray and make him get a real job — BreadsonBreadly (@BeardsonBeardly) July 10, 2016