The terrorist group known as ISIS is effectively using social media to proudly broadcast to the world its extreme brand of barbarism.

Each time the Islamic State in Iraq and Syria beheads children, crucifies prepubescent boys and wipes out entire religions, it turns to Twitter to advertise its reign of terror.

Buoyed by its success, ISIS began taunting the United States recently, posting disturbing content with the Twitter hashtag, #AmessagefromISIStoUS.

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Though the U.S. government hasn’t shown much stomach in stopping ISIS with a ground assault, Twitter is a whole other story. Americans quickly hijacked the group’s hashtag, showing that it has a long way to go before it can dominate the social media landscape the way it’s taken over much of Iraq.

With a little prompting, the “reverse jihad” was on. Here is a sampling, according to multiple Twitter postings:

I think its a good time to take over a hash tag….. #AmessagefromISIStoUS Reverse Jihad! — FloridaJayhawk (@HouseCracka) August 8, 2014

The ISIS hashtag takes online bullying from your mom’s basement to a whole new level. #AmessagefromISIStoUS — Jerri (@jerrigirl) August 8, 2014

@jensan1332 Murica!!! #AmessagefromISIStoUS pic.twitter.com/2zQBuwFpwF — Brandon Douglas (@AyBrandon) August 9, 2014