Here's the description by Dawson Bell of the Detroit Free Press of what happened during a service at Mt. Hope Church in Lansing, Michigan on Sunday:

Pro-gay protest disrupts Lansing-area church's services

A well-known Lansing-area evangelical church was the target of a raucous demonstration by gay anarchists during Sunday services.

The disruption came from a group that calls itself Bash Back, and involved demonstrations outside the church and inside the sanctuary while services were under way, said Mt. Hope Church communications director David Williams.

Members of the group inside the church shouted pro-gay slogans, threw leaflets, unfurled a banner and pulled a fire alarm, then hastily departed, Williams said. There were no injuries, he said.