Those nationalists would say, "Russia for Russians".
They deserve to fall out of windows, because in essence they advocate for the implosion of Russia.
There was always societal consensus that those other AQ and IS-affiliated troglodytes must be made a permanent part of the past - preferably through killing each and every one of them.
Over the course of the early 2000s we managed to practically finish the job. That's what I'm referring to when talking about mountain dugouts.
These guys could find no shelter, even in the smallest villages, because people would immediately snitch on them. So they lived in the mountains, like billy goats, eating berries and sleeping in holes. Periodically, they would get a visit from a heliborne rocket barrage or cruise missile, but otherwise their life had somewhat normalized and fallen into a routine.
Now, with this mall attack, they should start packing their little hiking bags again. Except, people are much more angry now, because this is a tremendous stab in the back to do something like this, while we are at war.