In her Native Appropriations blog, Adrienne Keene explained why she reposted this item:
In other words, they aren't thinking. They're regurgitating pat answers they heard before.
When you challenge their pat answers, they've got nothing else to say. For instance: "I don't find this offensive." "When many Natives are offended, who cares what you think?" Silence.
Anyway, next time we have a lengthy debate about something--e.g., a hipster headdress--I'll try this bingo card. It'll be fun to see if I "win."
For more on criticism, see Rob Plays "Oppression Olympics"? and Solving Problems with Critical Thinking.