I'm not avoiding any issue. There shouldn't be any restrictions on speech regarding this debate, but I don't expect a secular government to support creationist theory in publicly supported schools. That is why I made sure my children were educated in Parochial school.
My guess is that you would be equally irritated if the government presented Judeo-Christian as one of many creationist theories that also included Hindu, Buddhist, Mayan, Incan, Taoist, Zoroastrian, Baal, Druid and animist.
You guess wrong. Besides, I do see these other religions being expressed in schools, by teachers no less, and and having it protected as Free Speech. But your trying to get away from the point again; name the law against the free speech of Darwinism or Evolution? There are only laws against arguments against it!
How about intelligent design theory?