Not eating pork big, ritual killing of animals deal and draining blood from food big deal, some jewish customs have been adopted by many sects or religions over the centuries & mostly these people are muslim & christans and islam has adopted alot of jewish customs. The kipa ( skull cap ) is not a traditional jewish religious symbol its one of those head coverings thats evolved over the years and later was adopted in other parts of the world. They were not even worn during the time of the bible, back then people didn't have special head covering like this. Circrumsising was adopted by plenty of others. The Magen David is not a religious symbol & started to be used long after the destruction of Judea & the tribes becoming lost. Indiana Jones had an Ark, it went missing at the end of the first movie & they found it in Area 51 in the fourth movie. An Ark like object proves nothing, certainly doesn't prove its the original. Non of this proves any connection to judiaism.