Nerd or geek culture was quite reactionary for a long time now. It's a product of the (predominantly white male) western bourgeoisie and labour aristocrats, and its links to racism and sexism go quite deep.

This 3-page article (page 1, page 2, page 3) does a good job at analyzing these cultural aspects. It's a very interesting read.

Here's an excerpt from the introduction:

As geekdom moves from the cultural fringes into the mainstream, it becomes increasingly difficult for the figure of the geek to maintain the outsider victim status that made him such a sympathetic figure in the first place. Confronted with his cultural centrality and white, masculine privilege—geeks are most frequently represented as white males—the geek seeks a simulated victimhood and even simulated ethnicity in order to justify his existence as a protagonist in a world where an unmarked straight white male protagonist is increasingly passé.

Our investigation proceeds through three core concepts / tropes prevalent in geek-centered visual narratives:

1. "geek melodrama" as a means of rendering geek protagonists sympathetically,
2. white male "geek rage" against women and ethnic minorities for receiving preferential treatment from society, which relates to the geek’s often raced, usually misogynistic implications for contemporary constructions of masculinity, and
3. "simulated ethnicity," our term for how geeks read their sub-cultural identity as a sign of markedness or as a put-upon status equivalent to the markedness of a marginalized identity such as that of a person of color.

We analyze these tropes via an historical survey of some key moments in the rise of geek media dominance: the early-20th century origins of geekdom and its rise as an identifiable subculture in the 1960s, the mainstreaming of geek masculinity in the 1970s and 80s via blockbuster cinema and superhero comics, and the postmodern permutations of geekdom popularized by Generation X cultural producers, including geek/slacker duos in “indie” cinema and alternative comics.