VOA《Defense Argues Trump Not Directly Responsible for Capitol Violence》

The defense for former President Donald Trump is taking their turn in the US Senate Friday.

Trump's lawyers are focusing on his words at the January 6 rally ahead of the riot at the US Capitol, saying they are protected free speech and did not directly incite the violence.

老师：they are protected free speech 还是应该是 they are protected by free speech  呢？ 另外，是否应该是The defense of former President Donald Trump...我看到词典上都是用的介词of，不是for.