Form out of band relationships with coworkers you trust to get a base going then send an email to everyone from your department from an anonymous email address to solicit feedback and organize a vote.

Unions are legal in all occupations. There may be restrictions on some form of collective action (i.e. the government can force strikers back to work) but organizing is never illegal.

I think you may have speeded to a conclusion.

merges WordPress into the apt repository for grep

watches the world burn