The horrible slaughter in Orlando has tragically become entangled with the US Presidential campaign. The perpetrator proclaimed his allegiance to ISIS, but had previously expressed support for Jabhat al-Nusra, ISIS' bitter rivals. Anti-gay animus is clearly another motive, and the massacre has also reignited the gun debate.
It can never be repeated too many times: the purpose of terrorism is to terrorize, and ISIS also seeks to promote a war between the West and Islam, and apparently some in the West are eager to accommodate them. But ISIS is losing on the battlefield: at Falluja in Iraq, Manbij in Syria, and Sirte in Libya, it is on the ropes, so it is seeking to encourage civilian attacks by sympathizers and fellow travelers.
Obviously we must continue to guard against these kinds of horrific domestic terror attacks, but without sacrificing our ability to lead normal lives or sacrificing the values ISIS seeks to undermine.