Nothing they charged him with says protesting in a church is a crime. Protests can become criminal but they are not automatically a crime in themselves.
You're referencing the Face Act, but if you had read it you would know it requires that someone "by force or threat of force or by physical obstruction, intentionally injures, intimidates or interferes with or attempts to injure, intimidate or interfere with any person lawfully exercising or seeking to exercise the First Amendment right of religious freedom at a place of religious worship."
And the terms "interfere with," "intimidate" and "physical obstruction" aren't meant by their broad colloquial meanings, they're defined in the Act as:
(2) Interfere with.—The term "interfere with" means to restrict a person's freedom of
movement.
(3) Intimidate.—The term "intimidate" means to place a person in reasonable apprehension of
bodily harm to him- or herself or to another.
(4) Physical obstruction.— The term “physical obstruction” means rendering impassable ingress to or egress from a facility that provides reproductive health services or to or from a place of religious worship, or rendering passage to or from such a facility or place of religious worship unreasonably difficult or hazardous.
I haven't seen any evidence that clearly shows protestors did any of that. The embarrassing indictment does try to claim the defendants did those things but the things they allege are just flatly false, like this,
The video proves it is laughable to say he obstructed anyone.
There is zero chance Lemon will be convicted of the Face Act, although maybe some protestors could be if there is some evidence the government has that they've been hiding.
The other charge, the KKK Act, requires that someone "conspire to injure, oppress, threaten, or intimidate any person in the free exercise or enjoyment of any right or privilege secured to him by the Constitution." The big obstacle with this one will be proving anyone had the specific intent to deprive anyone of their rights let alone conspired with anyone to do so.
This has all been posted here before.
There is another charge, 18 U.S.C. § 2(a) for aiding and abetting, and this has its hurdles as well. I will quote from a Motion to Dismiss filed early in the case by defendant Ian Davis.
That Motion has lots of good stuff about other problems with the charges.
The Face Act clause for churches might also even be unconstitutional. That's explained in the below article which goes into other issues as well.
Unpacking the Don Lemon indictment, its factual allegations, the elements the government must prove to convict, and the potential defenses available to the accused.
www.lawfaremedia.org
moo