As part of the backlash over the protests and the controversy over the flag symbolism issue, a group calling themselves "Border Guardians" burned a Mexican flag in front of the Mexican Consulate in Tucson, Arizona, on April 9, 2006.[22] The following day the group proceeded to burn two Mexican flags during protest in Tucson which was estimated to have had 15,000 participants. After the police seized a student who had thrown a water bottle at the "Border Guardians", they followed the police officers calling for them to let the student go. As the situation escalated violence broke out and 6 were arrested with dozens being pepper-sprayed.