Well, it's now about a day since the downing of Egyptair flight 804. If you do a Google search for "Egyptair 804 false flag Mossad," you will already get over 2500 hits.
Another legend in the making. I'm sure we will be finding references to this on anti-Semitic sites for decades.
I just want to add that originally I said "right wing sites." I changed this, because unfortunately, hating Jews has become quite the pastime on the left too.