We have a good idea. Not no idea. And we know exactly how people are responding to the killing, regardless of motive, so we don't have to split hairs on that at all.
Do you not have friends? A social network of your own? People I know are responding in a similar fashion to what we are seeing all over the entire spectrum of online media.
I'm going to guess all of your friends and social network use the same sites and are in the same echo chamber as you. And please don't delude yourself into thinking that if you poll everyone on the spectrum of social media, that you will have any idea what the general American public think about a topic.
Neither here nor there, but were you surprised by Trump winning in the fashion he did?
There's the obvious angle.
Then, maybe Thompson paid someone to kill him, so his family could get an insurance payout.
Maybe Thompson was fucking the shooter's ex girlfriend, and he wanted to mislead investigators as to why Thompson was killed.
Maybe it's a Russian operation to sow discord in the US.
Etc