1) Wikipedia is not the sole custodian of "free speech", and indeed a
bunch of computer geeks posting (allegedly) inflammatory pictures on
the internet is going to do very little to establish a Utopian
e-Paradise replete with such lofty ideals as "free speech, liberty and
equality", the benefits of which would be apparent to anyone (Muslim
or otherwise) who has passed middle school history.
2) I very serious doubt whether even the most fanatical Muslim would
go through the trouble and expense of organising and executing a
real-life attack on said bunch of computer geeks. Indeed the most
realistic fallout of your newfound love for speech would be a beating
to Wikipedia's credibility.
3) In conclusion I would very sincerely suggest that you delete the
said image and encourage the press to run a story on page 19 about
autofellatio.jpg, Tentacle_rape and God_Hates_Fags to enlighten the
world to how sincerely you value WP:NOCENSOR, WP:NPOV and WP:ETC ETC.