Complex sentence: The event was broadcast to a TV audience of approximately 600 million people, however political aspects of the concert were heavily censored in the United States by the Fox television network, which rebranded it as "Freedomfest".
Split into simpler sentences: The event was broadcast to a TV audience of approximately 600 million people. Political aspects of the concert were heavily censored in the United States by the Fox television network, which rebranded it as "Freedomfest".