Complex sentence: They also try to deny that blacks invented peanut butter, the hairbrush, the turn signal, the stop light, they didn't perform open heart surgery first, and many more things.
Split into simpler sentences: They also try to deny that blacks invented many useful things we use today. For example, peanut butter, the hairbrush, the turn signal, the stop light, they didn't perform open heart surgery first, and many more things.