Meaning of choreography by fans of Inter and Milan

Inter and Milan fans have prepared super-coreography just before the start of the match. The two fans had prepared remarkable presentations in the triboons, making it even more special in the Madonina derby, reports Periscope. But what was their meaning? We start with local fans tonight, Inter's. They showed “Milanes character” biscion [...]
The two fans had prepared remarkable presentations in the tribuna, making the Madonina derby even more special, reports Periscope.
But what was their meaning?
We start with local fans tonight, Inter's.

They showed “The symbol of the Milanes” biscions (the blood found in the city's coat) that is catching its prey...
But the rival fans' response was epic:

Milan: In dialect “to visit relatives you go with full hands of” two hands tearing off the upper snake... /Periscopi/












