Wikipedia:Naming conventions (Czech)

Czech names: almost all names with diacritics use it also in the title (and all of them have redirect). Adding missing diacritics is automatic behavior of Czech editors when they spot it. So for all practical purposes the policy is set de-facto (for Cz names) and you can't change it. 

Exceptions
Exceptions to this policy:
 * (Ice) hockey-related issues: Naming conventions (hockey)

Related guidelines

 * Naming conventions (people)
 * Naming conventions/Geographic names