Because today, all over the country, men will be beating women in public, without fear of arrest or prosecution.
For some women in the Czech Republic, Easter is a time to dread.
The symbolism is pretty clear: the whipping, say Czechs, ensures the woman stays fertile and beautiful.
No woman escapes: women of all ages get a whipping, from children to grandmothers.
On the morning of Easter Monday, men and boys whip women of all ages, around the legs with special whips made out of twisted willow branches.
The women reward the men for this with a painted Easter egg.