This post was guest authored by Lin Miao ’17.
Realize that inaccessible structures are forms of violence.
When physically restraining someone, you must use force against him. You can prevent abled people from reaching the second floor of a building by subduing them at the foot of a staircase. Knock the wind out of them. Grab their ankles, forcing them to fall. Shake them until they’re dizzy.
For people with certain disabilities, the staircase itself is sufficient to restrain them.