There is absolutely no doubt what so ever Real Madrid get favored by refs regularly. It is way to painfully obvious, the whole world knows it. The yellow card was a bit weak, but it was a clumsy tackle and although a weak penalty, a penalty nonetheless.
Looking at it again, it was a penalty. Ref has been pretty fair over all. Juve just have to go out there and actually do something. Because they haven't shown a thing tonight.