Place des Arts has a long history of trouble with at least two labor unions, and the Supreme Court decision may not mean that the unions are out of options, according to labor experts. Still, the decision is unlikely to do anything to smooth the relationship between the venue and the unions, which has gotten decidedly ugly at times. As recently as 2000, members of the stagehands’ union were sued by Place des Arts for dumping skunk urine on the premises, releasing rats in the lobby, and disrupting performances with heckling and noisemakers.