They're sending the message to people working toward supporting the community, raising awareness in the general public who may wish to donate/support these entities, or get involved themselves. But sure, cynically boil it down to wearing a white shirt = stopping knife crime forever and mock the...
*players take a knee*
It's all well and good making a performative stand about racism, but why don't they do something about knife crime, eh?
*Arsenal do something about knife crime*
Pfft. Another Political statement. What good will it do, eh?!