Ten minutes into his speech, he was heckled by a protester, who shouted about the Trump administration "kidnapping children." The protester continued to shout, but she was drowned out by audience members shouting her down, and chants of "USA! USA!"
The chaotic scene lasted for 30 seconds or so, with Pompeo eventually quipping, "If there were only so much freedom of expression in Iran," to cheers and applause.
I can't get the quip made by Pompeo in this context. If there were only so much freedom of expression in Iran seems to have nothing to do with this context. Can somebody help me to understand it?
Here is the full source.