I came across this article on another website. I'm not sure whether to laugh or feel sorry for this person.
It basically argues that taekwondo and other martial arts
are a Trojan Horse in the House of the Lord, eroding the spiritual barriers between Zen Buddhism and the Christian Gospel, and potentially leading vulnerable children and teens into the early stages of eastern occultism. As a result of this research, our Christian School Board decided to no longer offer Taekwondo or other Martial Arts. The good news about religious syncretism is that it is never too late to repent and start afresh, serving one Master and one Master alone, Jesus Christ our Lord
I guess when we meditate we're suposed to be thinking about God and not clearing our minds.
With Aikido's heavy spiritual emphasis I figured it (we) would be a BIG target to religious zealots like this author.
I'm hoping people like this are few and far between.