Because people’s lives have become collateral damage for performative cruelty by the current administration and its supporters.

I'm more shocked about and curious as to why anyone would take time out of their day to press a button that does nothing other than to serve as a poor man's "read receipt" to indicate to the trolls that you read their message, thus incentivizing even more trolling.

But I assume nobody actually purposefully presses the button; only sometimes doing so by accident.