The singer shared her thoughts with fans on Twitter, and called for "ACTUAL change."
"Is anyone else really sad about the constant stream of shootings and how normal it's becoming to see these headlines on a weekly basis?" the 29-year-old California native wrote Saturday.
"Scared to go to school? Scared to go to the mall? Scared to go to the movies? Me too. When will there be ACTUAL change? How many more?!" she added. "You and I both know this is getting embarrassing...My heart goes out to ALL the victims & their families this week. I pray for change."
On Saturday, a gunman opened fire at Columbia Mall in College Park, killing himself and two others.
Perry isn't the only celebrity to speak out after the shooting. CNN anchor Piers Morgan, who has been open about his support for gun control legislation in the past, responded to Perry and invited her to appear on his show.
Come and talk about guns on my CNN show @katyperry - need voices like you to effect change.— Piers Morgan (@piersmorgan) January 25, 2014