I don't know the answer to that, it's difficult to tell what was or wasn't said to the protestor from a couple of pictures.
In all likeness, I'm going to assume nothing was said because he was spotted in 2 different spots holding that sign.
If by 'they' you mean 'the protestors' then it's clear, the coverage shows exactly how they're acting, and how they should be judged.
If you mean 'Liberals in general' - which you implied above - then at no point do I believe that groups of protestors (or more to the point, the subset of protestors that are committing crimes or being awful) are representative of 'Liberals in general' without evidence. In the same way I wouldn't believe people behaving awfully at Trump rallies represent a majority of people who voted for him on Tuesday. I'm sure we both agree on the latter, so I don't see why we couldn't agree on the former too.
The problem with people behaving at Trump rallies is that it was already exposed by Veritas that people were being paid to disrupt some of those rallies. So, whilst I don't judge all Trump supporters by those few, I also cut slack because many of them were being antagonized to be that way.
Edit* If you noticed a page or so back, I did say I don't consider the violent protestors a representative of the Democratic party. But, what I'm asking is if more & more news comes out about what some of these people are doing, where is the line drawn before Liberals start becoming nationally seen as this disruptive group of folks who didn't get their way? This isn't a centralized issue that moves from time-to-time like BLM, it's nation-wide right now & if more protests start creating stories about vandalism, assault, & rioting, they will eventually go the path of BLM & become known for it if it begins happening almost every Liberal protest.
Democratic leaders have a chance to nip this in the butt before they get painted in that light, and I can guarantee you it will not work out well for them in the 2020 election. They have to push out & punish the violence now. You & I, and everyone here will know not to judge the actions of a few, but not all of Americans have that mindset. If the news feeds people about Liberal protests causing problems, they will form their own thoughts. We already saw the news feeding people all year that Hillary had this election in the bag.
Of course, but given the Dems don't control these protests (as far as I'm aware) - and the fact you'll likely always get idiots at mass gatherings no matter what you do - I guess it's easier said than done.
How about the fact that nobody is saying anything at all? This is the perfect opportunity for Hillary to come out & condemn these protestors disrupting into violence. Instead, it's taking someone like Damian Lillard to come out, and say, "Stop".
http://www.espn.com/nba/story/_/id/...rtland-oregon-following-donald-trump-election
"I think it's very unfortunate that people have done some of the things they have done during the protest. A lot of harm and damage has been done," Lillard told ESPN on Saturday. "I do understand their frustration, and I commend people wanting to come together for some kind of change. Tearing apart your own city just isn't the place to begin, and also making your own city less of a safe place isn't the answer."
A point brought up about Portland is that it & surrounding counties voted for Hillary so why are they attacking their own city?
Trump, on the other hand, is reported by CNN to be asking his disruptive followers to stop.
http://www.cnn.com/2016/11/13/politics/donald-trump-60-minutes-first-interview/index.html
Again, where is Hillary or any other Democrats asking the same?