Film score violinist Sai-Ly Acosta and her fellow musicians fought back last week against an ugly campaign of union intimidation.

After Sai-Ly filed federal charges with help from National Right to Work attorneys, union officials immediately backed off from their threats to have dissenting musicians arrested and the musicians were allowed to rehearse with the orchestra for the time being.

However, other eyewitnesses said that union operatives posted signs throughout the building that read “Full Members Only,” and union operatives have harassed and intimidated the dissenting musicians, calling them “scabs.”

One musician even held there were so many of the signs posted in the building that she was surprised that there wasn’t a separate bathroom for those who exercised their Beck rights.