Given that the other party started with one-sentence flippant responses that weren't relevant to the text quoted, who exactly is attempting "to shut down the dialogue?" Anyway, the questions aren't rhetorical. They are legitimate. Some of them are sub-questions meant to expand on a more general question. But ultimately the general question is, "how do we equitably enforce new gun laws in the United States, given that the institutions of law-enforcement are highly racially-biased and given that past and current gun laws are disproportionately harmful to BIPOC persons?"
I did not say the questions were not legitimate, but there were about 20 of them fired off rapidly. I do not think you reasonably expected a thoughtful, measured, and researched response to all of them. Regardless of what anyone else was doing, this was clearly not an attempt at a dialogue.
It's like going on a date and asking, "Hi how are you, how many brothers and sisters do you have, do you want to have kids someday, how many, if we had a boy would you want to circumcise, do you want to raise them in any particular religion, what if they didn't accept that religion, and what if they wanted to raise their children in a different one, would you intervene, and what if the children's gender identity is different from what is assigned at birth, and would you support a trans child, ..." Each question may be legitimate on its own, but if you spew them out like that, pretty sure that the other person would bail real quick.