That said, as a white man myself, I would argue very strongly that I am not being "persecuted".
Synonyms for this word include: oppress, abuse, victimize, ill-treat, mistreat, maltreat, tyrannize, torment, torture; martyr.
I've never felt any of the above.
As a white english-speaking immigrant I've never been accosted about my status. I've never been given shit for being an illegal immigrant. I've never been given crap for "stealing American jobs" (and for the record, I am now a US citizen, no arrests, tax-paying, picket fence).
But I see it very often to legal non-white immigrants.
So you think YOU or your race/gender has been persecuted? You (like me) have no idea what that truly means.
If you think you can't have that conversation with HR (fear of retaliation or mis-understanding etc), then I perhaps a consultation with a attorney that specializes in labor law and the workplace.
That is what I'd do if I felt it was a real problem.
It's clearly acceptable for other ethnicities and genders, many companies will even setup official programs for those groups, so clearly it's ok to discuss publicly at work. That leaves white and male as the only determining factors that make it unacceptable, which is obviously racist and/or sexist.
- I have grievance X, how should I safely discuss it? - I can't possibly have grievance X!
The tech industry is heavily male and majority Anglo (aka white), with a large Asian representation. I presume that if you are on on hacker news you work in the tech industry or work at a startup of some sort.
I would prefer to not sweep your comment under the table. Its conceivable that there might be something that as a white male you are could be 'persecuted' by someone at your place of employment. However you are going to have to provide some real evidence how you are being victimized when the numbers are so tilted in your favor. And if this is true it is most likely one person, perhaps a superior? Gather some evidence in form of emails, documentation, etc. I'm not sure what kind of persecution you are the victim of but your first steps might be to discuss things with your immediate supervisor, or if that person is the source of your persecution then talk to HR or your bosses boss.
If you feel like moving to another team or a project might help look for internal postings at the company, talk to other people in other teams to see if you would be a good fit. A lateral move within the company might make a big difference.
One thing I would NOT do is write a letter about how women are prone acting neurotic, and complain about general efforts to get more women and minority members involved at your company. I would also advocate against complaining about being a minority based on your political beliefs, that the entire company you work for makes you feel ostracized because your political beliefs don't align with what your employers. That's probably a bad idea.
61% white is quite a bit lower than the white percentage in the general US population, so it's hard to see how Google is "overwhelmingly" white.