It's not the first time Jewish graves in Poland and elsewhere have been desecrated. It's been happening sporadically for decades. Back in 1998 graves were desecrated in the Jewish cemetery in Warsaw and the following year anti-Semitic slogans were painted on graves in the Jewish cemetery in Tarnów. There's quite a history in modern times of anti-Jewish graffiti and that kind of thing. And more recently:
2014
tabletmag.com/scroll/165267/jewish-gravestones-destroyed-in-poland
2015
algemeiner.com/2015/12/16/jewish-cemetery-in-poland-vandalized-graves-covered-in-antisemitic-pro-isis-graffiti
2016
sztetl.org.pl/en/cms/news/5078,jewish-cemetery-in-gdansk-vandalized
israelhayom.com/site/newsletter_article.php?id=34055
It's an ongoing issue pepetrated by a minority. It's not so much to do with them hating Jews as just being morons. If there had never been any Jews in Poland these idiots would still find something to smash, destroy or defile for amusement.
No. All it tells you is that somebody who wanted Ukrainian symbols to appear was behind the 'work'.
Excellent point Harry.