missouriIn a rapidly-changing world where nothing is sacred, one Missouri politician isn’t letting go of tradition.

In this case, it’s raw, bloody union violence.

Missouri State Representative Michael Butler, a St. Louis Democrat, has been served with a restraining order after punching a man in the face over a bill guaranteeing workers the right to a job without having to pay a union official.

The man he punched?  Fellow State Representative Courtney Allen Curtis, the only Democrat to vote for Right to Work legislation.

Both Butler and Curtis were at an AFL-CIO reception January 19th when Butler confronted Curtis, screaming about the latter’s support for Right to Work.

Right to Work laws prohibit making union membership a condition of getting or keeping a job, making union membership voluntary.

“[He] said to me ‘you are a bold mother—-er coming in here,’” Curtis told The Daily Caller News Foundation’s Connor Wolf.  “We continued to argue until it got loud enough to be broken up.  After that, we went to separate areas.”

Curtis left the reception, but Butler pursued him outside.

“[He] said, ‘talk that s–t now’ and walked towards me and swung, and a full fight started,” Curtis said.  “After some time, the fight was broken up.”

“Every member should feel free to advocate for issues that are of importance to their community without fear of retribution from anyone other than at the ballot box,” Curtis says.  “Physical or verbal intimidation or violence shouldn’t be tolerated — period — especially from members of the General Assembly.”

Right to Work passed both chambers of the Missouri State Legislature last year with clear majorities, but short of the two-thirds needed to override Governor Jay Nixon’s veto.

Democrats hope to send a message in the 2016 election to intimidate Right to Work supporters.

Twenty-five states have Right to Work laws and three, Indiana, Michigan and Wisconsin, have adopted Right to Work since 2012.

Most Right to Work states are in the South or West, but with its passage in Indiana, Michigan and Wisconsin, the law is coming to union strongholds.

Another union stronghold, West Virginia, is widely expected to become the country’s 26th Right to Work state in the next few weeks.

The matter has been referred to the Missouri State House, which enforces rules of conduct and decorum.