Cyclist kills motorist

"shouldn't have been riding so close to parked cars"
vs
"should look out for cyclists when opening car door"
?

The issue is that the guy on the bike punched the driver out of sheer anger for not looking first/provoked or not, and however careless the driver might have been, assaulting someone is always a low thing to do.

I've been doored twice. Both times the cars were stationary in traffic jams as I filtered.

There's not a lot you can do to avoid this except ride at 5mph.

Me too. Worst one was going downhill quite fast (15mph, say) down the cycle lane on the left. Van passenger door swung open and I went straight into it. I was riding a semi recumbent at the time, which weighs a hell of a lot, so the door of the van was very damaged. So was my knee though.