Recently it's become illegal to provide civil services in any language but French; this includes services that are government funded, like public libraries. There are four exceptions to this rule: you're First-Nations or Inuit, you arrived less than six months ago, you can provide proof you used English exclusively with the government before 2021, you can provide proof you are a student at an English-speaking school. There's also the warrantless search-and-siezure powers held by the Office Quebecois de la Langue Francaise (OQLF) where they can walk into any business unannounced and inspect your internal correspondence to make sure your employees are only using French. Employers who wish to hire an employee whose primary language isn't French must submit a written explanation to the OQLF as to why. Any companies with more than 25 employees can be asked by the OQLF to submit scheduled reports on how they are protecting use of French in their workplaces.

Ask wikipedia about "Pastagate"; things have become more severe since.