Mayor Martin Walsh will meet with Haitian community members this evening at an assembly planned at Sant Belvi, the Haitian Adult Day Care Center on Frontenac Street in Dorchester. The gathering will take place from 6-9 p.m. with Mayor Walsh expected around 7:30 p.m. The mayor led yesterday's Haitian Unity Parade in Mattapan and Dorchester. Walsh is no stranger to Haitian American issues. He traveled to Haiti in 2009 as a state representative.