Dmitry Shapoval swam across river to flee Ukraine
Small European country's family code revised
Handful of other European countries have passed similar laws
Country's voters in 2015 rejected marriage equality law
Voters last September overwhelmingly approved 'Marriage for All' law
Istanbul officials sought to prevent event from happening
Rule takes effect in 2022-2023 season
Gunman opened fire at Oslo gay bar
Organizers sharply criticized authorities' decision
Maria Alyokhina fled Russia disguised as a food delivery driver