

There was little to no actual anti-communism at play at that point (although it was still relevant symbolically). Both sides were already capitalist. Yugoslavia had been on the path of liberalisation for quite a while before the breakup.
Btw, that excuse that Thompson and his fans regularly use is bullshit, the phrase was picked by Croatian extremists (especially the paramilitary HOS) in the 90s because it was used by ustašas (fascists) half a century earlier in the first place.
The words “za dom spremni” are the salute, and everyone participated in that, Thompson initiated it.