A shocking video has gone viral of an alleged member of The Proud Boys being beaten by a mob of angry protesters at an Oakland vigil, following the Sunday night stabbing of 18-year-old Nia Wilson at a BART station. The Proud Boys, a conservative activist group, had previously scheduled a gathering for Monday according to Indybay.

An alleged member of the Proud Boys, an alt-right group, was beaten during yesterdays Nia Wilson protest in Oakland.pic.twitter.com/UtTIOJkjp5 — Breaking911 (@Breaking911) July 24, 2018

Bystanders can be heard shouting “f–k that n–ga, f–k his a– up” while somebody tapes the confrontation. Police sirens are heard blaring in the background as the crowd continues to viciously pummel the alt right member. -Heavy

The group was then chased down the street before police intervened.

Several men ID’d as Proud Boys are chased. Cops intervene.

Nia Wilson #SayHerName march in Oakland. pic.twitter.com/mcQSpUwjUt — Darwin BondGraham (@DarwinBondGraha) July 24, 2018

Hundreds of protesters gathered at the MacArthur BART station for Wilson's vigil. The suspect, 27-year-old John Cowell, was arrested on Monday evening and booked into Alameda County's Santa Rita Jail shortly before midnight.

Nia's sister Latifah was also stabbed, however she survived what protesters believe was a racially motivated hate crime.

The protesters began their vigil with chants of: “No Justice! No Peace!” and “Justice for Nia!” Meanwhile, speakers called on the protesters to take action, defend and protect Black women, and support the grieving family of the Wilson sisters, according to Indybay.