BOULDER, Colo. -- Dozens of Boulder community members gathered at the Boulder Public Library Thursday to stand up against a string of recent assaults.

“We’re here because there’s violence in our community,” said Deirdre Moynihan, executive director of MESA, which stands for Moving to End Sexual Assault.

MESA was one of a handful of community groups calling for an end to recent violence.

Since Halloween, several assaults have been reported to Boulder police. In one case, four men are being sought for their role in a sexual assault of a 20-year-old woman.

A spokeswoman for the Boulder police chief said each of the cases remain under investigation. Detectives have not linked any of the incidents.

Organizers dubbed Thursday’s march, “Journey to Justice.”

“The Journey to Justice is saying we’re walking on that path toward change -- toward justice,” said Boulder resident Emily Zisatte as she walked with the group along the Pearl Street Mall.

One young woman shouted into a bull horn, “No more violence, no more hate!”

“The concern is all of these incidents of violence and hate are just the tip of the iceberg,” said Audrey Franklin, who was representing the group Boulder Community United.

Other sponsors included the Anti-defamation League, Bias-Incident Hotline Project, Naropa University, Rocky Mountain Peace and Justice Center, Boulder Pride, and the University of Colorado.

Observers estimated the 75 to 100 people participated in the march.

The program concluded with an indoor rally in an auditorium at the Boulder Public Library.

“I wonder how many more attacks it’s going to take until we realize we’re living with friends and neighbors who don’t feel safe in our community,” said Amy Stein, from the Anti-Defamation League.

Moynihan encouraged participants to continue raising awareness and added more than 1,000 calls come in to the 24-Hour Rape Crisis Hotline per year.

She told 7NEWS the volume of calls has gone up. Moynihan explained victims may be feeling more comfortable asking for resources. Only about 10 percent of sexual assaults are reported to police, Moynihan said.