Please explain to me the meaning of this stiff arm salute that the football fans from Lviv are giving in this video. This is not 85 years ago. This is NOW.

https://youtu.be/E6SQHHi4kSk

Seriously. I want to know what this salute means, and if "Slava Ucraina" is not well and truly the Ukrainian equivalent of "Sieg Heil"?