Scott Lucas: Trump's New York rally has left me fearful about our broken political culture

At a recent rally Donald Trump reiterated his threat to use the military against "the enemy within" — any American who dared express opposition to his rhetoric or his actions. Photo: AP/Matt Rourke
I was planning to write this week about the effect of either a Harris administration or a Trump presidency on our lives in Ireland.
But then I watched Donald Trump's rally from Madison Square Garden in New York City. And, as a native of the US, I was shaken to my core.