5) Legia Warsaw
UEFA doesn’t like the idea of political symbolism around the football pitch. On August 3, 2017, Legia fans unveiled an anti-Nazi banner prior to their 1-0 win over Kazakh side Astana in the third qualifying round.
The banner showed a crying child with a Nazi soldier holding a gun to his head and the caption saying: "During the Warsaw Uprising Germans killed 160,000 people. Thousands of them were children."
Following this, UEFA fined the Polish club with €35,000. However, this did not make Legia’s fans back down. On the next occasion – UEFA Europa League qualification tie against Moldovan club Sheriff – Legia fans unfurled a banner of a huge pig. Besides the pig, the artwork included a UEFA sign, a bowl of Legia Warsaw badges and the words "and the €35,000 fine goes to..." Not to mention, the incredible flare display put up by the supporters that lighted up the night.