Sounds intriguing.....
So you know all about the 'old Spanish customs' of the Czech police, then...
Poorly paid, inadequately trained, outdated equipment - it's no wonder that some of them are bent. Far too many remain in service who started their careers under Communism and think they can still be judge, jury and enforcer.
I have had few dealings with the Spanish police, whether local or GC but those that I had were positive -courteous, professional, smart.
Anyone with any brain cells learns from their mistakes and careless parking is one mistake I won't make again!
Luckily my lesson was free, unlike in dear old Prague..