Facebook, Twitter and Google are being sued by families of three victims slain in the mass shooting at an Orlando gay nightclub for allegedly providing ‘support’ to ISIS.

The lawsuit was filed Monday in federal court in Michigan on behalf of the families of Tevin Crosby, Javier Jorge-Reyes and Juan Ramon Guerrero.

Keith Altman, the attorney representing the three families, also represented the family of a California college student killed in last year’s Paris terrorist attacks who also filed a lawsuit against Facebook, Twitter and Google.

Propaganda is often leaked through the social media and YouTube by Islamic extremist groups. And earlier this month, Facebook, Google, Microsoft and Twitter said they would move to more quickly remove terrorism content.

Omar Mateen, a 29-year-old born in New York, murdered 49 and injured 53 in Pulse in one of the deadliest shooting sprees in US history. He said he had been inspired by propaganda videos online before pledging allegiance to ISIS.

‘Without Defendants Twitter, Facebook, and Google (YouTube), the explosive growth of ISIS over the last few years into the most feared terrorist group in the world would not have been possible,’ the lawsuit allege, which was first reported by Fox News.

‘Defendants share revenue with ISIS for its content and profit from ISIS postings through advertising revenue.’

The lawsuit is likely to lose. There is a federal law that protects publishers from liability for the speech of others.