The footage shows the Aug. 11 crash that killed one dirt bike rider and injured another.
Adalberto Gonzalez, who survived a crash with a police car that killed the dirt bike driver, will sue.
Witnesses said a police car rear-ended a dirt bike Saturday in Hunts Point.
Dozens of bikers met at the site of the accident, then rode to the man's house to hold a memorial.
The dirt biker killed by a rear-ending cop car as a church-going building super, a relative said.
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