This painting is a Russified version of the painting by Francisco Goya.
According to Greek myths, Kronos (the Romans called him Saturn) was prophesied to be overthrown by his own child, so he ate his children and ruled in peace until his wife hid Zeus, who fulfilled the prophecy.
Russian patriots are children of the state, and it was clear that sooner or later putin would start destroying them, since all the activity of the leader of the nation has nothing to do with improving and strengthening russia.
This canvas captures the moment when the president of russia devours yet another Russian patriot.