Rick Bowmer / AP

It’s been one year since the mass shooting in Las Vegas, Nevada — the deadliest shooting in modern American history. Bump stocks, which allow guns to fire hundreds of rounds per minute, were used in that shooting. A ban on those enhancements took effect Monday in Connecticut.

Alex Brandon / AP

This week U.S. Senator Chris Murphy of Connecticut will join several other national Democrats, gun control advocates and progressive groups, in a one-day fundraiser for eight candidates who are challenging Republican members of Congress in November’s election. The Republicans all have “A” ratings from the National Rifle Association.

Jeff Chiu / AP

The Newtown, Connecticut-based advocacy group Sandy Hook Promise says it supports jeans maker Levi Strauss’s plan to donate more than $1 million to gun violence prevention groups.

Carolyn Kaster / AP

U.S. Senator Chris Murphy of Connecticut says that the Education Secretary cannot let school districts use federal money to arm teachers.

Davis Dunavin / WSHU

Students from Parkland, Florida, came to Newtown, Connecticut, Sunday for the last stop on a nationwide tour. Both towns have been the sites of mass shootings.