So I propose a change in the vernacular: considering the pejorative nature of the word sinister, we should ban its use among all non-lefties. Therefore, I propose that all right handed people refer to them as left-handed-Americans. Of course, I heartily endorse such left-handed-Americans making use of the Latin term sinistro, such as in the following example:
"What's up, my sinistro?"
Along with that I need to rename this thread to Manusism to avoid any reference to the now taboo term.