You should understand what putting a word in quotes means, regardless of internet memes.

According to Wikipedia [1], and I quote:

"A quotation or quote is the repetition of a sentence, phrase, or passage from speech or text that someone has said or written."

[1] https://en.wikipedia.org/wiki/Quotation

By quoting "far-left" the poster is indicating that he himself does not believe that Obama is far left but that it is something someone has said or written about Obama.

https://en.wikipedia.org/wiki/Scare_quotes

I "support" the article's criticism section.