In this appeal, Tecumseh is trying to get the various tribes to band together to fight against the white people (or, more specifically, the Americans). Therefore, Tecumseh describes the whites in highly negative tones. His basic message is that the white people are greedy and brutal people who are going to destroy the entire Indian way of life.
Tecumseh starts by calling the whites “intruders and tyrants.” He goes on to say that the whites are prone to “avarice and oppression.” He goes on to note that the white people are constantly becoming more “greedy, exacting, oppressive, and overbearing.” He says that the whites are continually wanting more Indian land and are treating the Indians more and more brutally. For this reason, he advocates fighting to the death.
Tecumseh describe the white people, then, as people who are taking the Indians’ land and destroying their way of life in very brutal ways.