In Patrick Henry's "Give me liberty or give me death" speech, the sentence that suggests he believed British rule in the American colonies was tyrannical is typically one where he emphasizes the denial of rights, oppression, or the imposition of unjust governance. A key phrase often associated with this sentiment is when he refers to the "slavery" or the "chains" of British rule, implying that living under such a government is akin to living in tyranny.
If you can provide the specific sentences or context, I can help identify the exact one that conveys this idea.