Christ is Risen!
We, Ukrainians, do the same thing on St. Thomas Sunday.
We go to the gravesites of our relatives to share the Joy of Pascha and the Risen Lord with them.
There is a Panachida performed in the Church, immediately following the Holy Liturgy, where all the names of the deceased are read and prayed for. Then there's the mass exodus to the cemeteries.
This can be an all-day affair. The priest, does go from grave to grave, with the crowd of people following behind him. It's actually quite touching.
Once the panachidas are completed, we stay behind and share some eggs, paska bread, candies, etc. with others, in remembrance of those who have passed on. After all, they are still a part of the "Church" even though they are no longer with us, here on Earth.