Carlos Arredondo serves as grand marshal for Boston Peace Parade (NECN video)

(NECN) – South Boston’s St. Patrick’s Day parade was not the only parade in the city Sunday.

The Peace Parade followed one mile behind and along the same route as the St. Patrick’s Day parade.

It was organized by Veterans for Peace.

The Peace Parade allows anyone to march, including gay groups.

Boston Mayor Marty Walsh was invited to march, but did not attend.

Carlos Arredondo and his wife were co-grand marshals of the parade.

Arredondo’s son was killed in Iraq in 2004. Last year, he helped save the life of Jeff Bauman after the Boston Marathon bombing.