the newshour's julia griffin reports for our arts and culture series, "canvas." nches and pirouettes, tara ghassemieh's instagram feed is filled with athletic feats of grace befitting a professional ballerina. but in the past year, her posts have also included advocacy. like these turns. the high bar normally set in the ballet world is to perform 32 in a row, as iconically danced by the black swan in the classic ballet "swan lake." ec what was atelf the time 50 days of protests in iran following the death of masha amini while in the custody of the country's so-called morality police. >> knowing that social media has literally been the driving force in bringing awareness to what is going on in iran i needed to do , my part. julia: ghassemieh feels that need because she herself is half persian, born in california to an american mother and iranian father who left the country shortly before the 1979 revolution. now ghassemieh, who performs with golden state ballet in southern california, says she is the first iranian-american principal dancer in the u.s. >> to be the