It appears that there was a terrorist attack in London outside of Parliament:
Five people have died, including a police officer, and at least 20 people have been injured in a major terror attack outside the Houses of Parliament, the Metropolitan police have confirmed.
Mark Rowley, the head of counter-terrorism at the Met, said a police officer had died after being stabbed by a lone attacker attempting to enter the House of Commons. The suspect was shot and killed.
Moments earlier, at about 2.40pm, the attacker drove a vehicle at speed into pedestrians on Westminster Bridge, near parliament, killing two people.
Rowley said at least 20 people, including three officers, were hurt in the attack on the bridge. A diplomatic source told Reuters three French students were among the injured.“This is a day we’ve planned for but hoped would never happen. Sadly it’s now a reality,” Rowley said. “The attack started when a car was driven over Westminster Bridge hitting and injuring a number of members of the public, also including three police officers on their way back from a commendation ceremony.
“The car then crashed near to parliament and at least one man armed with a knife continued the attack and tried to enter parliament.
I’m not really sure what to think at this point, except for one thing: If it had been the United States, as opposed to London, it would have been a gun, not a knife, and the death toll would likely have been in the double digits.
What? The wrong time to argue for gun control? Too soon?
It’s always too soon to talk about gun control, it seems.