Interamerican Convention to avoid all discrimination against people with any kind of discrimination.

According to this convention in article #2 it is necessary that people understand some ideas correctly.
1- Everyone communicates through language
2- Language can be in different ways(spoken language, by using hands, signs)

It is also important to communicate as clear you as you can because there are people with different difficulties or disabilities.These people suffer many times from discrimination because of some barriers they face everyday. To avoid situations like these it is necessary to adapt things to those people capacities. People with disabilities have the right to enjoy the same human and fundamental rigths as any other.