Pablo Martinez Monsivais, Associated Press
In this Feb. 19, 2015, photo, President Barack Obama speaks at the Countering Violent Extremism (CVE) Summit at the State Department in Washington.

BOSTON — Muslim groups and civil rights activists across the nation are calling for greater transparency in a program by President Barack Obama's administration that's aimed at countering homegrown terrorism.

The organizers are speaking out Thursday through coordinated efforts in Boston, Los Angeles and Minneapolis, the three cities where the Countering Violent Extremism program is being piloted.

Representatives of the groups, which include local chapters of the American Civil Liberties Union and the Council on American-Islamic Relations, will be speaking at Karmel Square in Minneapolis, in front of Boston City Hall and at the Los Angeles office of CAIR just before noon.

Among their primary concerns is that federal agencies continue to host invitation-only discussions about the program, referred to as CVE, to the exclusion of dissenting groups.

And despite months of planning, opponents say CVE organizers still refuse to share basic information about how these programs will actually work.

"It is deeply troubling that federal agencies are marching forward CVE program development while excluding dissent from the conversation," Nadeem Mazen, a Cambridge, Massachusetts, city councilor and board member of the local CAIR chapter, said in a statement. "Transparency and accountability are values worth protecting in a free society."

Representatives for Massachusetts U.S. Attorney Carmen Ortiz, whose office is coordinating the Boston program, did not immediately comment Thursday.

In February, CVE organizers in the three cities released "framework" documents broadly sketching out their local objectives.

The goal of the program is to have law enforcement and community leaders work together to prevent radicalization from taking root among young people and others vulnerable to extremist propaganda like that spread online by the Islamic State group.

Boston, Los Angeles and Minneapolis have proposed a range of strategies to tackle the scourge, from town hall-style discussions for the Muslim community and educational and training sessions for school staff and social workers to mentorships and social media campaigns geared toward kids.

The cities were chosen because law enforcement officials there have been doing outreach for years to Muslim communities.

Thursday's protests come as Congress is considering a proposal by the chairman of the House Committee on Homeland Security to create a dedicated CVE office in the department to coordinate all local efforts.

They also come as law enforcement officials in Boston tout their success in thwarting what they have described as two credible terrorist threats this summer.

The first was the June fatal shooting of 26-year-old Usaamah Rahim and the arrest of two others they say were accomplices in a planned attack on police. The second was the July arrest of 23-year-old Alexander Ciccolo, the son of a Boston police captain. Officials say Ciccolo was plotting to detonate a homemade bomb similar to the ones used in the Boston Marathon attacks on a college campus in support of the Islamic State group.