At a time when there is so much criticism of major media outlets for their lack of seriousness, depth, and insight, MSNBC host Mehdi Hasan’s September 6 segment with Republican presidential contender Vivek Ramaswamy offered a reminder of just how powerful a television interview can be when the questioner is relentless in pursuit of the truth. Hasan grilled the candidate—who, at the time, was still rising in the polls—on his wildly mixed signals regarding Donald Trump’s assault on democracy, on allegations that he engaged in unethical business practices, and on his dalliances…