Comment by ajsnigrutin

It could also be kids doing it "for the lolz", like in slovenia:

https://www.rtvslo.si/crna-kronika/na-zelezniski-progi-iz-ce...

similar thing happened next to a minority area where they put railroad ties (the big wooden things, usually supporting the tracks) on the tracks themselves, and well, that even got politicized for the location reasons.