Some businesses will terminate you for skipping over HR or other departments and heading straight to the top. HR and other assets are created to perform a function. Ignoring them and thinking you need to bend the ear of the highest level you can reach is often not looked upon kindly.
as to saving up all the evidence and somehow using that to throw everybody under the bus: an employee must allow the employer the opportunity to rectify the situation. The law states that an employee is considered an agent of the employer for the purposes of negative activity IF the employer knew or should have known of the issue. If the employer is not aware or an issue and has no reason to be aware of it, the only person under the bus is...
well...
maybe the single individual op claims to be the cause of the hostile work environment becasue the employer isn’t expected to rectify situations unless they are aware of them. That won’t do the op much good as long as the employer does act to correct any unlawful actions once they do become aware of them.
The offending employee may get as little as a stern talking to and a “don’t do that anymore” which would fulfill the requirements of the employer under the law.

