BY RICH GRISET, RICHARD FOSTER, DENIS SLATTERY & RICH SCHAPIRO

A neo-Nazi plowed his car into protesters who had gathered to oppose a white supremacist rally in a Virginia college town on Saturday, killing a 32-year-old woman and injuring at least 19 others.

The bloody day in Charlottesville turned even more tragic in the evening when a Virginia State Police helicopter monitoring the melees crashed miles away — killing two officers, officials said.

The carnage came during a whirlwind 24 hours in which hundreds of white nationalists converged on the home of the University of Virginia — leading to outbreaks of violence and a state of emergency being declared by the governor.

Tensions flared and protesters clashed, culminating in the terrifying moment when a silver Dodge Challenger barreled into a crowd of counter-protesters, knocking some to the ground and throwing others into the air.

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