[4] In an October 2016 speech on Rádio Frontinus [sk], Mazurek said "The Gypsy anti-socials have never done anything for the nation and never will", comparing children of Romani ethnicity to "animals in the zoo".

[5][6] In 2018, the Specialised Criminal Court convicted him under Article § 423 of the Penal Code, which prohibits "defamation of the nation, race, and belief", and fined him 5,000 euros.

[6] He was eligible for two-month severance pay and immediately hired as a parliamentary secretary for People's Party Our Slovakia, earning 2,700 euros per month.

[12] He refuses to wear a mask during the COVID-19 pandemic due to a false belief that it would cause carbon dioxide poisoning,[13] which led to his being thrown out of a bank in Poprad.

[14] In July 2020, he faced calls for his resignation after falsely claiming that the perpetrator of the Vrútky school attack [sk] was of Romani ethnicity.