It's a bit funny how all you guys are suddenly pointing out that one should always focus on your own mistakes as uf you were the first to discover that improving the things you have actual control over is the secret to success. I think everybody is aware of this. It still sucks when you've played well enough to secure three points but missed out on these because of something you couldn't control.
And it's only natural to get angry about that, especially when it was such an important game. I can't recall Bayern having to suffer such a point loss in such a decisive situation due to (a) referee mistake(s) while I remember multiple occasions that worked against Dortmund in a title race with Bayern. And that makes sense because the Bayern officials always knew how to punish these things by building up public pressure.
The only comparable situation to this from Bayern's perspective was the CL tie they lost against Madrid and even then it was pretty ridiculous since Bayern was lucky Vidal wasn't sent off before they were disadvantaged. Didn't stop every Bayern official and fan to go completely nuts over it.
Easy to appeal to self reflection when it's rarely yourself finding yourself screwed by the referee