White nationalists march along Boathouse Row

A group of self-proclaimed white nationalists called "Keystone United" marched through the streets of Philadelphia on Saturday.

The group was founded back in 2001 in Harrisburg and now has chapters all over Pennsylvania.

According to the Southern Poverty Law Center, Keystone United, known until 2009 as the Keystone State Skinheads (KSS), is one of the largest and most active single-state racist skinhead crews in the country.

The group was met by counter-protestors near a statue of an Icelandic explorer that had previously been defaced with red paint and anti-Nazi symbols.

FOX 29 caught up with Philadelphia Mayor Jim Kenney about the incident.

"It's disgusting we have a president that will not decry white supremacy or neo-Nazis but will pick on a football player taking a knee in order to obtain for justice for people of color," Mayor Kenney said. "We're in a really bad situation in our country right now; however, the first amendment is the first amendment, so these idiots have the right to protest if they choose to."

The group eventually marched to the art museum without incident.