The Ku Klux Klan (KKK) has been threatening to go after Ferguson protestors ahead of the impending Michael Brown grand jury decision. This weekend, hacker-activist group Anonymous went after them through Twitter.

Also read: MSNBC's Chris Hayes Reacts to Criticism Over KKK Interview on Ferguson

First, the @YourAnonNews hacked into the KKK's website, taking it down (it's back up now).

Next, it hacked the group's Twitter account with some pretty graphic imagery [showing the hanging of a KKK member].

It seems like the Anonymous group still had control of the KKK Twitter as of early Monday morning, teasing an announcement for Monday evening.

The Twitter hackery comes after members of the KKK based near Ferguson started distributing flyers threatening "lethal force" against protestors when the grand jury decision in the case of Michael Brown gets handed down.

Also read: 'Mad Men' Unearths LBJ's KKK & Goldwater Ad

MSNBC host Chris Hayes had the group's leader on his program last Wednesday. The segment lasted under four minutes, and Hayes received brushback from viewers and social media for giving the hate group's leader a national TV platform.

Also read: CNN Brings Mothers of Michael Brown, Trayvon Martin and Sean Bell Together for First Time (Video)

"I knew some, even many of our viewers, would not like it," Hayes told TheWrap.

The grand jury decision in the Brown case could be announced as soon as this week.