The Supreme Court’s decision yesterday to strike down mandatory payments to public employee unions was a blow to the unions, which depend on a consistent flow of money to survive. The leaders must now persuade public servants to join their ranks and fight for better wages and benefits. It is a time for PR — what your union is doing for you. The campaign must be unrelenting because new employees enter the ranks constantly while older ones retire. The unions must also remind their ranks daily of the value of staying together and dealing with government. It is not going to be an easy task, but the unions’ future depends on it.