No, their not *union* people. They are ALL *government* employees who belong to a government union.
Government employees are at risk and have no desire to see their generous tax paid government salaries, government benefits and their lottery style government retirement pensions tampered with.
Surely SEIU represents some private sector employees as well. It was originally a private sector union.
That is the point of the article, this prominent union is tied to World Communism but if you knew the name of the organization, this would be no surprise.
I do not disagree with your point, just making a weak joke.