Maanavta mein sabse bada gunah hai kamzor logon ko apna gulam banana aur unka fayda uthana. Lekin ye gunah sabse zyada hua America jaise desh mein. Jahan logon ko khareeda jata, janwaron ki tarah kaam karwaya jata aur maar diya jata tha. America Azad hua aur fir shuru hua iska virodh. Isi muhim ke tahat famous reformer "Frederick Douglas" ne Slavery ke khilaf di ek speech jo hum le aaye hain Audiobook mein.