Complex sentence: When his backers attempt to turn off the speech, he angrily calls out "Don't cut me off, I paid for that microphone!", a line which will be used similarly by Ronald Reagan at a 1980 New Hampshire debate.
Split into simpler sentences: When his backers attempt to turn off the speech, he angrily calls out, "Don't cut me off, I paid for that microphone!". That line was used similarly by Ronald Reagan at a 1980 New Hampshire debate.