Two D.C. nightclubs also cited in social media post
Event coincides with national protests over George Floyd's death
Former rivals endorse political newcomer in special election
Baltimore Safe Haven organized the event
Demonstrators take a knee, chant 'I Can't Breathe'
Police seek help in finding victim to identify attackers
Harvey Milk's nephew also spoke about decriminalization campaign
Ferrero to lead Fund for Investigative Journalism
Antifa threat leads to massive police presence in Rehoboth
College Park Mayor Patrick Wojahn calls for justice for George Floyd