Mocking black people’s hairstyles while simultaneously profiting from it as an aesthetic in their mvs. Heechan saying Chenle’s hair looks like boiled octopus.
While there is no direct translation of the r slur in Korean, the closest is ‘저능’ (jeoneung) which is widely seen as derogatory towards neurodivergent and disabled people.
The Arabic texts which was written on the set of NCT' stage translates to
"Peace be upon the fifth of the People of the Cloak, Peace be upon him, who was saturated in (his) blood"
This is a reference to the cruel massacre of the family of Prophet Mohammed PBUH.