Riot police in Oakland dispersed hundreds of protesters with tear gas on Tuesday night as crowds tried to re-enter a plaza outside of City Hall that the authorities had cleared of an encampment earlier in the day. After the forceful response to the Occupy Oakland protests, officers in Atlanta moved in early Wednesday morning to clear a similar camp in that city’s central Woodruff Park. At least 53 people connected to the protest group Occupy Atlanta were arrested, and the park was cleared by 2 a.m. Eastern time, the Atlanta Journal Constitution reported.