john donahoe, and th cofounder of stop api hate, cynthia c. thank you so much for joining us. >> good to be with you. >> thank you. kristen: after each mass shooting, we always ask, why did it happen, and what needs to change? but it seems we keep going around in circles. professor donahue, you've done a lot of research on gun violence and public policy, what do you think is the question we need to be asking? >> well, of course, there is much to be done, california has a strong laws, but the supreme court has been weighing in in ways that are trying to reduce the potency of those laws. many of the gun safety regulations that are currently in place in the u.s. are being challenged in the federal courts right now, after the june u.s. supreme court decision expanding the second amendment. so, in some ways, things are bad, but they could get a lot worse, if these challenges to things like the assault weapons ban in california and the on high-capacity magazines are thrown out, as the gun lobby is trying to do throughout the country. much to be done