Sarah Ashton-Cirillo wounded on battlefield in February
Amsterdam Rainbow Dress displayed at Lincoln Memorial on Monday
Country's activists remain defiant as they mark war's first anniversary
Oksana Markarova spoke at servicemembers photo exhibit in D.C.
Volodymyr Zelenskky responded to Kyiv Pride petition
Dmitry Shapoval swam across river to flee Ukraine
Russia launched war against Ukraine in February
Special envoy in regular contact with activists, groups
Elvira Schemur died in Kharkiv on March 1
Kyiv Pride urges supporters to defend country