BOSTON — A few dozen free speech advocates rallied peacefully Saturday on Boston Common but, just like last summer’s event, they were outnumbered by counterprotesters. The “Rally for the Republic” event was held by conservative groups Resist Marxism and Boston Free Speech despite being denied a permit by the city. Police surrounded the gathering. Rally speakers gathered at a bandstand on the Common warned that free speech was under threat and accused Antifa and Black Lives Matter groups of being terrorist organizations.