What is the ruling of Islamic law on organizing a demonstration outside the mosque to demand the resignation of its director, who engages in un-Islamic behaviors such as canceling Arabic language and Quranic studies classes and neglecting the mosque's facilities?

If the mosque manager is untrustworthy and unqualified, he should be dismissed and replaced by a more suitable person. It is not advisable to stage sit-ins or display banners to avoid media distortion of Islam and mosques, and to prevent governmental or media interference. Instead, prudent individuals should present evidence of his mismanagement to the higher administration responsible for him. The manager can be threatened with organizing a demonstration and displaying banners to show seriousness, which might deter him. If other means prove ineffective, and it is highly likely that a demonstration would bring about change by removing or deterring the manager, then there is no harm in it.