The lady on the video is high in Flakka, a dangerous new drug that had started to spread death in the US.
When consumed by humans, flakka causes people to feel euphoric and to mildly hallucinate. In short, they becomes psychotic.
The paranoia, and delusions often cause people to act with bizarre, aggressive and zombie-like behavior which make them kill people on their way.
They often rip off their clothes and run out into the street violently and have an adrenaline-like strength.
Police are called and it takes four or five officers to restrain them. Once they are restrained, if they don't receive immediate medical attention they can die.
So would you dare taking this drug for $5 only?