Juan Rosario was shot in the torso while stabbing his wife in Kingsbridge Heights, police said.
The 17-year-old boy was at 176th Street and Grand Concourse when the biker kicked him.
The brothers beat a man to death after they said he had slapped their father, sources said.
The man died after falling and injuring his head outside a Washington Avenue bodega, police said.
A driver brought his passenger to The Bronx, where the rider suddenly turned on him, police said.
Raymond Martinez, 22, was killed in the lobby of 2860 Grand Concourse in Fordham, police said.
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