AFAIK selling legal Weapons into the Commodity Market (and the Mission types as posted by others) cause +Civil Unrest.
Re commodity market, those sorts of mechanics have never been proven to exist by anyone, just like trading biowaste for outbreak. Given the wording of outbreak and famine in the recent BGS livestream update, I'm not even sure selling food or medicines on the markets fixed that state.
Note the part of the wording I'm talking about odd, where we currently roll with "trading food/ medicines helps end that state" the description in the stream explicitly says "completing missions to deliver food or medicines will help end the state" or something to that effect... let being missions for food or medicines.
I wouldn't be surprised if murdering civilians counted towards civil unrest in anarchy systems, even though it makes no sense.
The annoying thins is there is very little you can do to reduce civil unrest in an anarchy system.
The definition I've always used has been civilians =civil unrest, cops = lockdown. When I've done murdering, I've targeted both, and had both go pending usually.