If you look at "extermination" as spraying for cockroaches in one apartment building, just to drive them into the next apartment building, then I guess "extermination" of the jews is what has been going on since the third century or so. Of course, that would include efforts to convert jews as well, which aren't listed on this thread, but were apparently quite successful at times, in gaining sincere conversions. Well, isn't that where the apostles themselves come from in the first place!