Celebrities took to social media Saturday, expressing shock, outrage and sadness that neighborhood watch volunteer George Zimmerman was found not guilty in the death of unarmed teen Trayvon Martin.

Some Twitter users – such as Russell Simmons, Sean “Diddy” Combs and Solange Knowles – posted a solid, black square for their Twitter avatar, a showing of support for the victim.

“Say a prayer for Trayvon Martin’s family,” Simmons wrote.

Donald Trump wasn’t surprised by the verdict.

“Zimmerman is no angel but the lack of evidence and the concept of self-defense, especially in Florida law, gave the jury little other choice,” he wrote.

New York Giants wide receiver Victor Cruz wrote an anti-Zimmerman Tweet but quickly deleted it.

“Thoroughly confused,” he wrote. “Zimmerman doesn’t last a year before the hood catches up to him.”

Cruz later apologized for the Tweet.

Rapper Talib Kweli expressed hope that Martin’s family will receive justice.

“The way this Zimmerman case divides us shows how far we still have to go as a country,” he wrote.