The Crusades were a response to islamic terrorism.How many people have been killed and wars started all in the name of religion and 'my god is better than your god'. And most religions have at some time killed/started wars in the name of their faith.
Thomas Jefferson sent the Marines to take out the Barbary pirates because islamic terrorism.
We sent U.S. forces to fight in Afghanistan and Iraq because islamic terrorism.
Israel has been in perpetual war since 1948 because islamic terrorism.
Others here can name (and likely have first hand experience with) other examples.
Anyone that thinks islam is a religion probably thinks democrats are about democracy too.