n.1. a skinhead who listens to ska
2. a n enthusiastic ska listener, who often sympathize with the punk community. This term was made famous by the Punk/Ska band Rancid in their song "Roots Radicals" off of the album "And Out Come the Wolves"
I went to the concert, but the band that opened played ska so there were a ton of moonstompers raising hell throughout the show.