It's also available on Amazon Prime - https://www.amazon.com/dp/B00JE5N2UC?ref=sr_1_1_acs_kn_imdb_pa_dp&qid=1537851801&sr=1-1-acs&autoplay=0
Denis Villeneuve of Blade Runner 2049 made a film called ‘Polytechnique’ before he was famous.
Also, an NHL player not knowing about politics reminds me of Jonathan Bernier complimenting Nelson Mandela as a ‘great athlete’.
You can stream it for free on Amazon Prime with a Fandor trial: https://www.amazon.com/Polytechnique-Maxim-Gaudette/dp/B00JE5N2UC
If you are a student or use your local library, you may be able to use Kanopy: https://www.kanopy.com/product/polytechnique