Citing free-speech concerns, Muni won't take down the ads that label Palestinians and other enemies of Israel as “savages” (even though the Jewish Anti-Defamation League labels the ad's message as “anti-Islam”).  The decision by Muni is probably the right one, but luckily some graffiti do-gooders are out there stamping out the hate speech:

via Facebook, uncredited.

And here's the original advertisement:

(And should you be interested, Mother Jones has a good piece on the ads and some background on its sponsors.)