Step-by-step explanation:
a person is born alone and dies alone
when a person is born , he has no idea of what his family status is or what cast he belongs to.. all he needs is to breath and live..and when that person dies he has to leave everything including wealth cast race etc cuz he can take nothing with him when death calls...this is something that every human experiences...
so if death is common to everyone why can't they be called equal... if we take religions ..however it shows that people must live in harmony and love eachother..so im sure that everyone can live harmoniously as members of 1 human race..