Educate-- that's a good thing.
Organize-- as long as you aren't organizing to violate someone's life, liberty, or property, have at it.
Unionize-- eh. Maybe. Is membership in this union voluntary for employees? Will the union violate the property rights of the employer? For every poor schmuck just trying to make a living by joining a union you have to remember the mobster getting rich off of union dues. I've had jobs where the management were horrible to the employees, but this behavior always cost the company, even though I've never worked in a unionized business. Being a jerk always has a price.
RE: Evil plus evil equals doubly evil