If you’re looking for something to do, here’s something. It’ll be a heckuva lot more effective than time spent arguing about gun control on Facebook.

The Archdiocese of Philadelphia invites all people of good will to join in prayer for the nearly 60 people killed and close to 600 injured in the tragic attack this past Sunday in Las Vegas.

The Mass will be held at Saints Peter and Paul Basilica in Philadelphia at 5:30. The mass will be said for all the victims and their families as well as an end to gun violence and senseless tragedies.

A rosary will be said at 7 p.m. right after Mass as well.