The memorial was just breaking up in Hampshire County on the step of the Northampton City Hall steps on Tuesday, May 25, a fight broke out.
When police responded to break up the fight, they spotted the 19-year-old teen from Florence, spray painting City Hall, Northampton Police said.
Due to the large crowd, it was not feasible at the time to intervene.
Later that evening the 19-year-old suspect was placed under arrest and is to be charged with vandalism and resisting arrest.
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