I've read the complaint and scrolled through the almost 100 pages of screenshots of bad internal memes and social media posts. The memes are bad, yes. But the complaint is a hodge-podge of things that reference "white" or "conservative" or "male" or any such thing, in no particular order.
For instance, under "Anti-Caucasian Postings," there's a screenshot of an employee sharing (on internal G+) a link to Tim Chevalier's blog post "Refusing to Empathize with Elliot Rodger: Taking Male Entitlement Seriously." This tells me two things: first, the people who prepared this complaint were so scattershot in their attempt that they stuck something with "male" under "Anti-Caucasian Postings." (The employee's commentary on the link is "The doc considered formally as abuse springing from an entitled worldview. Excellent essay." - so nothing anti-Caucasian there, either. The post itself, which is on the public internet, does mention race a few times, but focuses on gender.) Second, it tells me that the people preparing the complaint think that a white man's link to a white man's essay expressing opposition to the manifestos of mass murderer Elliot Rodger, mass murderer Marc Lépine, and James Damore is somehow either anti-Caucasian or anti-male (giving them the benefit of the doubt that they miscategorized it).
Now, you may certainly argue that it's distasteful, unprofessional, unacceptable, and perhaps even unconscionable to have your coworkers compare you to two mass murderers simply for having written an article that (in their view) makes similar points. I'd certainly agree that there were and still are attacks on James Damore as an individual at Google. But that is in no way anti-white or anti-male, unless you think that the content of those manifestos, and (in two cases) their direct connection to mass murder, is somehow intrinsic to whiteness or maleness - which seems both wrong and a huge attack on white men, more than anything alleged in the complaint.
Plenty of other posts are similarly not attacks on whiteness or maleness, many of which are miscategorized - other "anti-Caucasian postings" include someone writing that "the creator of Dilbert is ... a paranoid sexist dickbag", a link to an HBR article entitled "Why Do So Many Incompetent Men Become Leaders?", a truly awful-quality meme conveying "0 days since last ... white male says diversity isn't important," etc.
Finally, remember that this is a lawsuit by one side, which has a story to tell. We don't know that we're not seeing a cherry-picked picture. Maybe these sorts of low-quality memes and overly-political posts on corporate channels affect everyone. It's certainly the case that shortly after Damore's suit, a story came out about an employee with rather diametrically opposed opinions being pushed out by management: https://docs.google.com/document/d/15JokX8thp1TxG_I9aodYUxDw...