Encourage employees to represent their beliefs individually by giving them more holidays?
Looks like you're trying to shoehorn your belief, i.e. employees to have more vacation time, which is fine, but has nothing to do with "have more time to express themselves politically". That's a stretch.
I don't think it is that much of a stretch. As it is, most employees in the US barely have enough time to take a day off to vote, although that is getting easier with mail-in ballots. By giving employees more 'free time', they can spend it where they want, including political causes of their choosing.
Looks like you're trying to shoehorn your belief, i.e. employees to have more vacation time, which is fine, but has nothing to do with "have more time to express themselves politically". That's a stretch.