A 65-year-old man was shot and killed Saturday night on Maynard Street in the Ingleside district, after he approached officers with a machete and failed to respond to their verbal commands. The man's roommate had called police because she feared for the man (or for herself) after he was drinking on top of his medications. Clearly he was in enough of a stupor not to have understood that he shouldn't have chased down police with what's being a called a "large machete," but the death follows on a report by the SFPD that a third of all officer shootings in the last five years could have been avoided due to the use of Tasers.