WBEZ brings you fact-based news and information. Sign up for our newsletters to stay up to date on the stories that matter.The day after the police shooting of Philando Castile, hundreds of young Asian Americans connected online to write an open letter to their parents, grandparents, aunts and uncles, asking them to support movements like Black Lives Matter. It also broached a subject many felt deeply uncomfortable bringing up to their older relatives: anti-black racism in Asian American communities. The letter has set off countless conversations across generations of immigrant families in many different languages. Shereen Marisol Meraji and Kat Chow talk to Christina Xu, who started this project, and listen in to one conversation between a daughter and her father about why she chooses to join these marches.