Green Day frontman Billie Joe Armstrong has shared a new photo on his official Instagram account, slamming President Donald Trump over Twitter usage with Martin Luther King’s reference.

As we all know, January 21 is the memorial day of political activist and priest Martin Luther King Jr. And it’s a federal holiday falling on the third Monday of every January.

Billie Joe Armstrong hopped to social media to share an illustration for criticizing Trump and his Twitter usage. As you might see in the picture, MLK shutting Trump’s mouth with his hand while Trump trying to login to Twitter.

Here’s what Billie captioned:

“#mlk”

A fan named shawn_2531 wrote this:

“I like trump but the dudes gotta lay off Twitter.”

Another user named corrixrose95 said this:

“I don’t like trump either but wasn’t mlk all about freedom of speech? So this is kinda ironic no?”

See the Instagram photo below.

View this post on Instagram

#mlk

A post shared by Billie Joe Armstrong (@billiejoearmstrong) on