President of U.S. Donald Trump said it is time to stop being politically correct after a terrorist attack in London.

“We must stop being politically correct and get down to the business of security for our people. If we don't get smart it will only get worse,” he tweeted.

He also slammed London Mayor Sadiq Khan for his words about the attack.

“At least 7 dead and 48 wounded in terror attack and Mayor of London says there is ‘no reason to be alarmed!’” Trump said.