SO tell me what is brahma, khatria, vishnu and shooder aren't hose castes.....
Do you even know the difference between a sect and a caste? First you say
Hindu sects, when I ask you tell me about the sects, you immediately change the term to
castes. Don't be wavering so much, it undermines the value of your statements.
By the way, the terms you mentioned as castes shows your level of understanding. Do not be debating what you know nothing of. Brahma and Vishnu are two of the trinities. Khatri is a gotra, and not a caste (but perhaps you won't know the difference).
Let me help you with a general outline -
Four major castes are Brahman, Kshatriya, Shudra, Vysya.
Contrary to popular belief, (and even practice in modern era), the caste of a person is not defined by the family one is born in. Rather by the quality of profession/education one goes for.
As per Rig Veda (the oldest of Vedas that found Hinduism), a child, until have taken up a profession, remains free of castes. And the profession taken up later in life defines his/her caste.
A hymn from the Rig Veda clearly indicates that one's caste is not necessarily determined by that of one's family-
Rig Veda 9.112.3
I am a bard, my father is a physician, my mother's job is to grind the corn.
If even that does not help you, then you should know that neither of the largest worshiped Avatar's of Vishnu (the most revered of the trinity in Hinduism) were uppermost caste.
Ram was a Kshatriya, and Krishna was a Yadu.
Now, with your half baked knowledge, before you go on to loathe others about caste-ism in modern times please do keep in mind that discrimination on the basis of caste in India is not only taboo, but also criminal.
P.S. There is no such thing as a sect in Hinduism. In Islam, oh yes, Ahmadis are there, and we all know what a godly treatment they are given in Pakistan. Refer to the defacement of the grave of Pakistan's first Nobel Laureate.