By Chiara Fiorillo Meghan Markle appeared on stage during the keynote event of the SXSW Festival in Texas where she addressed important issues including the “toxic” trolling she received while she and Prince Harry were still senior royals. The Duchess of Sussex got emotional as she discussed her two pregnancies and highlighted the “cruel bullying and abuse” she and her husband faced on social media. Meghan appeared on stage alongside journalist Katie Couric, actress Brooke Shields and diversity equity and inclusion consultant at Peoplism, Nancy Wang Yuen. Errin Haines, host of The Amendment po…