This kind of disrespect or no polite expression, you know they are out of some kind of ignorance, then you don't care too much.

这种不尊重或者没有任何礼貌的表示，你知道他们是出于某种无知，你就不会太在乎。

youdao

"I don't know what it is to be hungry," said Mary, with the indifference of ignorance.

“我不知道饿着肚子是什么滋味。”玛丽带着一种漠不关心的无知说。

youdao

Don't make presumptuous comments out of ignorance. Don't make improper comments before you know the whole story.

不要不明原委， 就妄加评论。

《新英汉大辞典》

Maybe that's my ignorance... about, you know, portraiture and all of that.

或许那就是我对于肖像画和所有一切的无知……

关于现代美术 - SpeakingMax英语口语达人

Say, do you want to let people know that you stand foursquare with the forces of ignorance, boorishness and fearmongering that have hijacked the national political conversation?

FORBES: The Joe Wilson Store

" Her backup singers in the Gospel Queens plead ignorance: "I don't know, I don't know.

NPR: Naomi Shelton Knows What You've Done

Now, I speak of ignorance because, a, I don't know how - I don't have a computer.

NPR: Felix Rohatyn's View Of The Financial Crisis