It's wrong to stop supporting a union.
Eric is a teacher who is upset about paying his teacher's union fees.
Eric wants to avoid paying so much money.
Eric gathers some supporters and asks the union if they can lower the fees.
Eric stops paying the union fees, quits the union, and teaches on his own.
The union works to reduce internal expenses and lowers their fees.
The school fires Eric because he's not protected by a union, and they can take advantage of him.