Not entirely true, at least locally. Precipitation in Czech republic in August is just 40% of normal state for this month [1]. The lack of rains is a big deal here.
I see it as a irony that in 68 there were many communist activists in the West, while Czechoslovakia - socialist country - was invaded by 'allied' eastern bloc armies. Reason was that local politics shifted towards what was called "communism with a human face", meaning it introduced freedom of expression.
Any attempt to implement Marx ideas resulted in unimaginable amount of suffering and injustice, scarring nations for decades to come. I am dismayed that he still has so many followers, and quite a lot of them seem to be Westerners.