WICHITA, Kan. (AP) — A prayer gathering has kicked off a week of anti-abortion activities planned to observe the 25th anniversary of the “Summer of Mercy” protests in Wichita.

The weeklong event is in observance of the 1991 Summer of Mercy when thousands of anti-abortion activists gathered in Wichita, sparking protests that led to nearly 2,700 arrests outside local clinics.

About 10 members of Operation Save America gathered Saturday at a prayer tent near the Wichita convention center. Operation Save America, based in Texas, is a successor organization to the original Operation Rescue, which led the 1991 demonstrations.

The Wichita Eagle reports essentially no activity Saturday around the South Wind clinic, which provides abortions and is the primary focus of anti-abortion activism in Wichita.

Operation Save America’s first mass meeting was scheduled for Saturday evening.