The same could be said of right-of-centre people too; there's been more than a few insults coming from that direction too.
I disagree massively.
The outspoken left get very personal about those who have the temerity to vote Conservative.
I just don't see the same happening on the other side. Over the past few weeks, I've not seen a single post within my Facebook feed from a Conservative voter targeting those who may vote Labour. Not one. In contrast I have seen tens and tens of posts calling Conservative voters nasty, evil, stupid and selfish.
Both sides go after the personalities leading the other party, obviously, but only one side gets nasty about the voters of the other side. And that's why that side sits quietly biding their time until they are in the ballot box.