As thousands of polio survivors with varying degrees of paralysis left the rehabilitation hospitals and went home, to school and to work, many were frustrated by a lack of accessibility and discrimination they experienced in their communities. In the early twentieth century the use of a wheelchair at home or out in public was a daunting prospect as no public transportation system accommodated wheelchairs and most public buildings including schools, were inaccessible to those with disabilities. Many children left disabled by polio were forced to attend separate institutions for "crippled children" or had to be carried up and down stairs.