Twain had declared the American Flag polluted by the new imperial adventures in the Philippines, and had come in for a load of criticism. Here was his response.
The Flag Is Not Polluted 
I am not finding fault with this use of our flag; for in order not to seem eccentric I have swung around, now, and joined the nation in the conviction that nothing can sully a flag. I was not properly reared, and had the illusion that a flag was a thing which must be sacredly guarded against shameful uses and unclean contacts, lest it suffer pollution; and so when it was sent out to the Philippines to float over a wanton war and a robbing expedition I supposed it was polluted, and in an ignorant moment I said so. But I stand corrected. I concede and acknowledge that it was only the government that sent it on such an errand that was polluted. Let us compromise on that. I am glad to have it that way. For our flag could not well stand pollution, never having been used to it, but it is different with the administration.