@Svejk
You (and many others) don't post in R&S so I should poit out that I'm speaking as an atheist but *please*, I ask of participants, do not take my views as typical of atheists.
(i) The dead are dead and are entirely unaware of what occurs in the vicinity of their remains.
(ii) If they were aware, they might actually be pleased to see modern youth free to gambol and play in a peaceful world, Germans and French no longer at each other's throats over things as trivial as territory.
(iii) Graveyards are for the benefit of the living. I'll leave the concept of veneration of the dead as something for the denizens of R&S to mull over. Is it a belief system in its own right?
(iv) The proper place to venerate the dead (particularly the war dead) is in our minds. We can do this every day, if we so wish. Or every time we enjoy ourselves and our daily freedoms.
(v) An overgrown, neglected graveyard would, I must concede, put out the wrong message so, once built, it must be properly maintaned. If running a crowd across it does visible damage, then just don't repeat the exercise.
(vi) The political right are always authoritarian. Most of their utterances are in the form of "thou shalt not"s. If you're having more fun than they are, they will want an immediate stop put to that.