Karnataka in many ways is an extension of the cow belt. Even the best of the Kannadigas are unable to question the casteism in their society and at home. A few years ago in Bangalore, I went for a funeral and ended up in a wrong caste crematorium. There are public or general crematoriums and then there are Brahmin crematoriums. The half-naked men with huge tummies (not a very pretty sight to look at) who were wearing caste apartheid certifying cotton thread (Janeyu) across their upper portion of the body told me that the given cremation ground is only for Iyengar Brahmins. They asked me about the caste of my friend, before guiding me to the public cremation ground. For them, this inquiry was a usual affair. I found it a little weird that Kannadigas have caste-based cremation grounds and it is absolutely normal for them. I come from a region where Hindus and Sikhs, across the castes (with minor exceptions), cremate their dead ones in the same place.

I am not denying the presence of caste and caste-based discrimination in Punjab. There is a lot of anti-caste work is being done by mainstream religious authorities across the spectrum.
Sikhs get ashamed when you talk about caste-based Gurudwaras in Punjab. Taking the note of prevailing norm of casteism, Shiromani Gurudwara Prabandhak Committee (SGPC), referred as the parliament of the Sikhs, is going out of its way to destroy caste-based Gurudwaras and asking the believers to pray at one place.

Whatever said and done about Arya Samaj, the Arya Samajis in their own understanding worked to destroy casteism in Hindus of Punjab and declare them all Aryas (after the ritual Shudhikaran: purification). Similarly, during the British Raj days, Ahmediyas, a sect of Islam supported (both financially and socially) the Dalits of Punjab to push for equality and proportional representation.

A Punjabi Brahmin has no problem (or finds it very normal) in doing Karam Kaand (rituals) for members of Valmiki Samaj, something I have seen growing up in our own neighbourhood. That said not all Valmikis rely on Brahmins for Karam Kand, as they have their own priests. Some Dalit Bahujans in Punjab believes in mainstream Hinduism and Brahmins facilitate their rituals. You will see a lot of Savarna Hindus going to the places of worship of Dalit Bahujans, Dargahs and Googa Zahir Pir to seek blessings. This kind of social behaviour will sound very odd to the residents of the most progressive states of the union like Tamil Nadu and Kerala.

I heard few Lingayats (not mainstream Hindus) priests are speaking against caste in Karnataka, but it is too little and very late.