Ten day notice may be given under certain conditions including breach of contract, see ILCS 5-9/210 and Chicago municipal code 5-12-130. And in this case, the landlord claims displaying a flag is a breach of contract.
(Note that the notice means that the lease will end in ten days, which is when eviction proceedings may start. It will take considerably longer for the courts to send a sheriff out to enforce it).
Ten day notice may be given under certain conditions including breach of contract, see ILCS 5-9/210 and Chicago municipal code 5-12-130. And in this case, the landlord claims displaying a flag is a breach of contract.
(Note that the notice means that the lease will end in ten days, which is when eviction proceedings may start. It will take considerably longer for the courts to send a sheriff out to enforce it).