To be honest pretty much any bigger professional organization already operates under "Leave politics and religion at the door." umbrella. It's pretty much the only way how you can have an organization filled with mixed political viewpoints function in the same direction.

For some reason however, Google and their employees kinda fail to understand this basic tenement of work culture. They're not a scrappy 10 people startup anymore which can be both a workplace and a political party fully agreeing on political issues.