Again, exploding people with bombs and using trucks as bullets is already illegal. More to the point, it's important to not conflate extreme ideologies with spe

Again, exploding people with bombs and using trucks as bullets is already illegal. More to the point, it's important to not conflate extreme ideologies with specific groups which use those ideologies. ISIS uses Twitter to recruit people to ISIS. There are many violent extremist groups that aren't ISIS, and would love to see it's demise.