Leadership Conference on Civil Rights

An immigrant-rights group stymied in its efforts to hold a concert last week accused officials in Somerville and Cambridge of blocking its efforts to reach out to youth.

Leaders of Centro Presente and Friends of Cambridge said local police and city officials refused to provide them with alternative dates or locations to host its youth Hip Hop Concert for Justice, which they had planned for May 2 in Somerville. Centro Present leaders said Cambridge later canceled a concert they planned to make up for the one in Somerville.