Critics ridiculed Donald Trump on Saturday after he gave a speech in Pennsylvania where, before he was finished speaking, many of his own fans had already funneled out. Trump spoke in State College, PA, where he at one point lashed out at sound engineers after saying the sound on a video he played was “lousy.” Before he was done talking, people started leaving, resulting in a crowd that was seen as sparse by onlookers. Vice President Kamala Harris’ campaign posted a video of the development, saying, “Crowd empties out of half-empty arena as Trump speaks in Pennsylvania.” Want more breaking pol…