I really appreciate the last line. I also believe in this, but the way articles are written here (even article on Khatris) with mention of  mixed caste of low-ritual status, born of the union of Kshatriya mothers and Shudra fathers,  mixed pratiloma caste of low ritual status, but he suggested that Khatris could be a mixed caste born of Kshatriya fathers and Brahmin mothers Are we animals??? where we are suggesting hybrids and so on. We are humans, such lines should not have been used in any of these article at first place, as these lines narrating that we get lower quality of human beings if one go out of their caste, is ridiculous, and is provoking for any community. There is no scientific basis of it. And to be honest, i see a racist in you as well, who is classifying people as trading class or schedule class or Rajputs or kshatriya (and then asking for references). A new born has no caste, he/she believes in what he/she is told to believe.
And caste is nothing on which anyone should feel proud or shamed, as he has not decided it for himself. 

I believe such things should not be said. No body has right to tell other person that you are of lower status (in written or verbal). There are so many beautiful things about each of us, i think one should concentrate on beautiful things rather criticizing or naming them as lower status.

The way you write articles, i dont think so, content written above is going to change anything in you. i will provide you with the said references by next week as i am really going out of time.

Thank you.