Yes it is an oxymoron, but it is being forces down the throats of the American public.
Take the ACLU and their nation wide attacks on everything religious that is even remotely related to civil government. They are sewing cities over bibles and monuments, and crosses in 150 year old city seals. What’s next? Are they going to St. Louis and St. Paul forcing them to change the city names because of the religious implications associated with them?