Read the sentence.

Not all the treasures of the world, so far as I believe, could have induced me to support an offensive war, for I think it murder ...

Which word in the sentence from The Crisis is loaded or charged with emotion?

Loaded words are charged with emotion - they clearly state what the author of that text thinks about the subject.

So, in this sentence from The Crisis, the loaded word is murder, as it shows us what Thomas Paine thinks about this kind of a war.