It's fascinating how 90% of all musicians seem to be far left when they discuss politics, yet the only band they could get was George Clinton and Parliament (which actually means George Clinton and a bunch of guys he hired to play songs by the actual Parliament) - a group whose last good record came out almost 35 years ago.
Basically it looks the SEIU and the NAACP and La Raza and the rest hired buses to give their members a free day trip to DC.