One week after violent protests rattled Charlottesville, Virginia, a scheduled free speech rally in Boston today was met with thousands of counterprotesters, but the day went off mostly smoothly, police said, with 27 arrests for assaults on police Officers, but few injuries..... After the free speech event has concluded, counterprotesters still swarmed Boston this afternoon, and riot police also responded in the city. ... Amid the confrontations, Boston police tweeted that individuals are asked to "refrain from throwing urine, bottles and other harmful projectiles at our officers."