According to
this, Trump was just cut off while delivering a speech at the RNC. He didn't seem to be instantly cut off, but in that video at least, the camera does pull back and fade away while he is speaking.
If this is true, then it does seem indicative of a breakdown in the democractic process. We seem to have moved very definitely now into a paradigm where allowance of any form of communication depends on who the speaker is, and whether or not the Left approve of them; there isn't even a pretense of neutrality or objectivity any more.
I keep reading about how people think America is becoming a fascist country; but all of my observation has told me that the real fascists aren't who everyone seems to think they are.