Story highlights A video captures Michael Brown's stepfather urging crowd to burn down Ferguson

Louis Head is heard saying, "Burn this motherf---er down" and "Burn this bitch down" before violence erupted

Brown's father has called for peaceful protests in a PSA and in a family statement

(CNN) Michael Brown's stepfather consoled the dead teen's distraught mother after Monday's controversial grand jury announcement and then turned to the crowd of demonstrators, saying, "Burn this motherf---er down" and "Burn this bitch down," according to a New York Times video.

The comments by Brown's stepfather, Louis Head, came shortly before an eruption of rage by some protesters over the decision not to indict police Officer Darren Wilson in the August shooting death of 18-year-old Brown in Ferguson, Missouri.

A row of businesses on West Florissant Avenue, a major thoroughfare in the St. Louis suburb, was engulfed in flames Monday night. Police cars and vehicles at a nearby dealership were turned into fireballs. There were so many blazes that firefighters couldn't reach every one.

In The New York Times video, Brown's mother, Lesley McSpadden, is visible in the crowd Monday night in Ferguson.

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McSpadden speaks to the crowd briefly, saying she has lived in the community her whole life and never experienced anything like this.

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