Local residents plan to gather in Boston’s Copley Square today to protest against the fatal shooting of an unarmed black teenager by a white Missouri police officer and local law enforcement’s subsequent military-style response to protesters.

The demonstration is set to begin at 2 p.m. with a rally followed by a march, according to a Facebook posting. The march was initially planned to proceed from Copley Square to the Massachusetts State House, but late this morning, people who planned to participate began debating on Facebook whether a march to Boston police headquarters was more appropriate.

Michael Brown Jr. was shot and killed last Saturday in Ferguson, Mo., by Ferguson police Officer Darren Wilson, 28, Police Chief Thomas Jackson told reporters yesterday.

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In announcing the officer’s name, Jackson also released documents that alleged Brown had stolen a box of cigars from a convenience store and pushed a store employee on his way out shortly before his death.

The timing of the allegation reignited anger within the black community of the St. Louis suburb, where earlier in the week protests had led to violent clashes between demonstrators and police.

Police use of tear gas and rubber bullets on crowds has led to widespread criticism of military-style tactics on civilians.

On Thursday, hundreds of Boston-area residents gathered for a vigil on Boston Common in Brown’s memory.