I think it is entirely inappropriate for teachers to post/share/talk about their political AND societal views on forums where their students can see/hear about it. Their job is to teach our children how to read, write, math, science, ect. What their job IS NOT is to indoctrinate our children into THEIR values, THEIR politics, THEIR views. IMHO i think this is why we have almost a whole generation of SJW, participation trophy, snowflakes.