As far as i knw these things exist even today and not just in small town but even in big cities. And i think one of the famous case was the nitish katara case. There was another case where a hindu girl married a muslim boy and the girls family got him killed. Though this is interreligious marraige but it is a type of discrimination. And the sad thing is pple just shut their eyes and think everything is changing but reality is very different.
Honor killing still takes place. Especially, if the boy belongs to a low caste. And casteism isnt shown only in marraiges but also in education, employment, etc. People who recruit employees delibrately select employees from their caste. And i dont think it is higher caste being mean to lower caste or vice versa. Whoever has power misuses and abuses it.
And i also knw that in some cases family try show they have accepted intercaste marriage where in reality they dont.
As far as the show is concerned, i also luv the ambience as i m frm UP though dont live in India. Even at home we say hum for main. So it is nice to see it on tv.