Ann, the worst song ever? Do you mean of any song or in Eurovision? There have been a lot of songs since 1956!
Australia not in Europe is irrelevant as neither is Israel who have won three times but, as has been pointed out, it is not a European contest.
As for the winner, the most emotional song of the night. I quite liked it. Yes, lyrically it refers to Stalin's cleansing of Crimean Tatars from their homeland, which was bound to irk Russia, but there have been many songs in the past which will offend. I mentioned on another thread that the 1976 Greek entry was a blast at Turkey for invading Cyprus the year before.
Since when has Eurovision not been political?