Place it at the end of a tribute edit, after a build with Drama and before a close with We Are The Champions, so the message lands as the final word rather than a passing quote.
关于此声音
This short spoken clip carries Salvador Allende's voice delivering the famous line about great avenues opening for free people, in a solemn, measured tone. It feels defiant and hopeful rather than angry, like a final message meant to outlast the moment. It comes from Allende's last radio address in Chile on 11 September 1973.