On a personal level, on the odd occasion when I mention to people about how animals are painfully killed in abattoirs (usually via illegal shortcuts, by stunning not being implemented to increase "productivity" - but also by no stunning in the case of Jewish or Muslim slaughtering), they usually cover their ears and say something like, "Oh, I don't want to hear!"
Old habits die hard, but marches such as the one you have mentioned do a lot of good in spreading the word.
Old habits die hard, but marches such as the one you have mentioned do a lot of good in spreading the word.