From The Guardian’s agony aunt column:
My mother believes I preach too much, and people are allowed their own opinions. I don’t see sexism as an opinion and don’t believe that anyone is entitled to their sexist beliefs.
They’re allowed to believe absolutely anything they want, however damn stupid it might be and however hirtful to a special snowflake. Just as you are entirely and perfectly entitled to react to it in any manner you wish, short of actual violence.
This is not actually what the agony aunt says. Instead, you should “talk about it”.
Spreading feminism by being a gabby bird. Yup, that’ll work.