Cheer up, brother (or sister)! It seems you can easily travel to a lot of Africa, south east Asia, caribbeans and a few other places: https://en.wikipedia.org/wiki/Visa_requirements_for_Kenyan_c...

What kind of legal barriers kenyans have to travel?

A good number of countries require visa. Being granted a visa is often an uphill task, with demands made for your bank statements, proof of income to ascertain you have a job to come back to, proof of hotel bookings for where you are headed or proof you have somebody to host you, any other proof to show that you are indeed visiting to do what you are claiming is the purpose of the trip. It's an endless list of demands and they could still deny you the visa.

Well, that's for everybody. I can't go to the USA because they demand visa with the same requirements you said.

Although there are many countries that don't demand visa, they will only allow you in for 3 months maximum.