Well, let’s start by making an assumption: I’m prioritizing books with butch characters in them, and particularly, with butch protagonists.
"Butch" tends to denote masculinity displayed by a female beyond that of what would be considered a "tomboy." It is not uncommon for butch-looking females to meet social disapproval.
A butch woman could be compared to an effeminate man in the sense that both genders are historically linked to gay communities and stereotypes, whether or not the individuals in question are homosexual.
Butch and femme (French word for woman) are terms often used in the lesbian and gay subcultures to describe, respectively, masculine and feminine traits.
Femme is also frequently used in the transgender community; see En femme.
The bottom line is there are legions of reasons why a movie could be considered "essential" to the LGBT community.
We've ventured into the tricky territory of ranking which are most essential.
(2008): This film about the life and death of pioneering gay politician Harvey Milk won two richly deserved Oscars, for Dustin Lance Black's screenplay and Sean Penn's performance in the title role.
It does not make Milk a plaster saint, but portrays him as fully and fallibly human as well as a formidable crusader for the rights of all.
So, standing in solidarity with those women ought to be a no-brainer.
Unfortunately, not all lesbians got that memo: In particular, one group of radical lesbian feminists has made a habit of loudly and insistently espousing extreme transphobic ideas of the type that are more usually found among religious conservatives and those ignorant of the struggles for trans acceptance.
So when I say that I have 10 of the best erotica books for butches to recommend to you, I’m not joking.