ایکاش محمد، پیامبر اسلام، دین دیگری را برای الگوبرداری انتخاب کرده بود.....

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Ha ha ha...Priceless

Look at how the guy holding the donkey's rear end is tilting his head to avoid possible "objects"or"gasses"coming out the animal's end.  Really...I feel bad for the poor donkey for having the misfortune of being mixed up with these morons.  Religion is such a bizzre, useless and dangerous thing.

Assuming, of course, that this is not photoshopped

The ceremony is called "redeeming the donkey." If the firstborn of a donkey owned by a Jew is male, a lamb must be given to a Kohen (decendents of Jewish priest class). Like some other forms of sacrifice or redemption, it seems the lamb gift was a tax presented as religious duty. Today, very few Jews have donkeys so the redemption is rarely necessary.

Here's how one rabbi interprets the ceremony:

"The Gemara teaches that this is a reward for the donkey. When the Bnei Yisroel exited Egypt, the Egyptians gave us many gifts (see Shemos 11:2-3; 12:35-36). The Bnei Yisroel needed to somehow transport all these gifts out of Egypt and through the Desert unto Eretz Yisroel. The Jews could not simply call Allied Van Lines to ship their belongings through the Desert. Instead Donkey Lines performed this service for forty years without complaint or fanfare! In reward for the donkey providing the Bnei Yisroel with a very necessary shipping service, the Torah endowed the firstborn of this species with sanctity (Gemara Bechoros 5b). In essence, Hashem rewarded the donkey with its very own special mitzvah. Thus, this mitzvah teaches us the importance of acknowledging when someone else helps us, hakaras hatov, for we appreciate the species of donkeys because their ancestors performed kindness for us. If we are required to appreciate the help given to our ancestors thousands of years ago, how much more do we need to exhibit hakaras hatov to our parents, teachers, and spouses for all that they have helped us!"

http://rabbikaganoff.com/archives/1733

The ceremony is also performed just to keep tradition alive. This web article is about some Australian Jews who had to go through a lot to set up the right conditions just so they would be able to enact their tradition. http://www.jta.org/2009/05/06/news-opinion/world/in-rare-ceremony-jews-redeem-donkey-in-australia