here are the things that come to mind for me when i think of the symbolism of white rabbits.

ishtar: Assyrian and Babylonian goddess of sex, fertility and war.

easter: supposedly named in honor of ishtar and symbolized by white rabbits and eggs which are both symbols of fertility and/or sex. this also seems to be a mockery of Jesus in a way.

white: purity and virginity

Aleister Crowley: believed and taught that a proper sacrafice "should be virgin — the whole potential of its original total energy should not have been diminished in any way"

this all totals up to white rabbits representing a demonic ritual where in an innocent virgin child is sexually taken advantage of and then sacraficed