You signed the contract. You agreed to it. So, now you're stuck with the provisions of the lease regardless of whether or not they violate your rights!
Luckily for tenants, that's not true. Leases are contracts, so they must abide by contract laws. Unconscionable or illegal terms of a contract are unenforceable, regardless of the fact that the tenant signed the contract.
Here are some common unenforceable lease terms: