Lynn Nadel, a professor of psychology and cognitive sciences and the chairman of the university’s faculty, said the meetings served as a call for action. “We don’t need to wait for the explosion to look around and find out for ourselves how we’re doing and how we must change,” he said.

Despite repeated efforts by the university and the managers of the apartment complex to stop the harassment of the mosque and its members, problems have persisted. Mumina Obeid, a premed student at the university and a Sunday school teacher at the Islamic Center, said that more than once she had picked up liquor bottles littering the turf where children play during recess.

Ms. Obeid, 20, who was born in Tucson to a Syrian father and a Mexican mother, said a 5-year-old boy had come up to her holding a can of chewing tobacco he found on the playground.

“What kind of message are we sending to our children when their place of worship is treated like a trash can?” she asked.

The high-rise rental complex, Sol y Luna, says it offers furnished apartments, a rooftop pool, a yoga garden and assigned garage parking, all within two blocks of the campus.

A company based in Pennsylvania, GMH Capital Partners, bought the property in the fall and has installed motion-sensitive cameras outside the buildings in an effort to catch offenders. Four residents were evicted under the previous owners, The Arizona Daily Star reported.