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The Boston Globe

Metro

Stark overtones in ’11 Waltham killings

For victims, Tsarnaev, ally, many strands of violence

On a Sunday afternoon in summer 2010, Brendan H. Mess, a close friend of Tamerlan Tsarnaev and a specialist in mixed martial arts, was walking along a Cambridge street when he came face to face with a police officer. The patrol­man was investigating a complaint that Mess, then 24, had attacked a group of people near Inman Square, breaking one man’s nose and leaving another with a bloody mouth.

Rather than cooperate, Mess began yelling at the officer, at one point saying, “I can knock you out if I wanted to,” according to the officer’s ­report. Soon, three additional officers arrived, and Mess was hit with a chemical spray, wrestled to the ground, and handcuffed.

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