Former striker Ladislav Vizek has launched an outrageous defence of Ondrej Kudela, claiming racist language is commonplace on English training grounds and "not even considered an insult".
Rangers midfielder Glen Kamara has spoken out and accused the Slavia Prague defender of calling him a "f*****g monkey" during the Europa League last 16 defeat.
A UEFA and Police Scotland investigations are under way and the Czech league leaders have promised to act "if the outcome warrants it". But debate continues to rage in Kudela's homeland.
Vizek's son-in-law Vladimir Smicer engaged in a fiery argument on Czech television, in which he went head-to-head with former striker Petr Svancara.
The pundit claimed it was "fashionable" to address racism and cast doubt on Kamara's allegations.
Smicer, a former team-mate of Steven Gerrard, asked why Kudela would cover his mouth if he hadn't said anything inappropriate and as things got even more heated declared "you're crazy".
Writing for Sport the former Liverpool man's father-in-law took the side of Svancara as he made the bizarre claim that such language is acceptable on the training ground.
Vizek, who was part of the Dukla Prague side that dumped the Ibrox club out of Cup Winners' Cup in 1981 wrote: "I played against Rangers once, I remember how their players behaved with an incredible sense of superiority At the same time, they got a 3-0 beating.
"In Glasgow, we read contemptuous newspaper articles as if we didn't even exist, I couldn't believe it at all. And they've behaved the same way now.
"Slavia were better, the Scots hadn't lost all season, they said they would be tougher after the first leg, and it turned out that way to brutal effect. They went after the boys like animals, behaving like complete lunatics.
"Smicer sees it differently than I do. He played in England for a long time, as well as in France. I tried to understand him, but I still had to dial Petr Svancara's number and apologise to him
"Everything that happened during and after the match really annoys me. No one talks about anything but racism. Nobody appreciates Slavia's great performance.
"I understand that in other countries, the perception of what is racist is quite shifted, you insult someone, and it works, but at the same time everything needs to be approached wisely.
"But from what I've heard, in England, such epithets are commonly used in training, and it's not even considered an insult there.
"I saw Kuchta being kicked on the ground, they almost killed Kolar, it was a crime.
"Their attitude, after all, is also in a way a manifestation of racist behaviour. They expressed no respect for Slavia, quite the contrary. They were superior, conceited, just because they consider us a developing country from Eastern Europe.
"I don't recognise the word racism, I hate it, I treat everyone the same. I don't really care, but the way the people of Rangers fought and behaved really annoyed me. I'm so sad about it.
"See how Slavia behaved at Chelsea, at Leicester. They were praised everywhere, they gained a reputation, everything went completely without problems, without excesses. It was just sport, nothing else was involved.
"And you will see that the Arsenal will behave perfectly well. They will be over it, they are not lunatics from Scotland."
