They can't be serious... 

Via Guns.com:

Though a recent high-profile shooting at a Congressional baseball practice did not involve a suppressor, gun control advocates pose the question “what if it had” in an effort to derail pending reform on the items.

In the aftermath of the shooting that left GOP House Whip Steve Scalise among others critically wounded at a practice for a charity baseball game, national proponents for increased gun regulations are claiming the incident could have been worse if the assailant used a suppressor.

“We’re grateful to the law enforcement officers and first responders who bravely protected those present at the shooting and saved lives,” said Robyn Thomas, executive director of the Law Center to Prevent Gun Violence, in a statement. “It’s terrifying to imagine how much more difficult it would be for police to respond to a mass shooting when a gunman has a silencer.”

Read more here