Up to 1,000 demonstrators last night gathered at the scene of Tuesday evening's eviction on North Frederick Street.
Gardaí defended assigning masked officers to the eviction.
A small number of these protesters were arrested and gardaí now claim that one of their members was subjected to racial abuse.
At the height of the evening rush hour, protesters sat down en masse at the junction of O'Connell Street and Parnell Street for about an hour, leading to the suspension of services on the Broombridge Luas line. There were also delays of around half an hour to 10 Dublin Bus routes.
Traffic came to a standstill as demonstrators weaved their way along Gardiner Street where three Dublin Fire Brigade trucks were deployed after protesters allegedly set off a fire alarm.