Do people from different clans or classes marry each other in India?
i'm very sorry for replying so late.
Although orthodox Hindus (called Brahmins) do not prefer marrying to other clans. Arranged marriages specially foucs on marrying in the same clans. Similar to how Orthodox Jews would prefer to marry among the orthodox,rather than reformist. I hope you got my point.
But in recent years Hindu Nationalist organisations have made lot of efforts to stop these clan/class barier, in order to maintain Hindu unity.
Dear Hindu Zionist,Namaste
What is Hindu Holocaust Day is marked worldwide on August 14 each year?
Namaste Boyana,
The day is to remember the loss of life of Hindus living in Pakistan, while India was partitioned on 14th, Islamic state of Pakistan was established, almost of hindus were slaughtered living in Pakistan on that unfateful day. Some of us also mark the day as "Undivided India Establishment Oath Day" on which we take a oath of re-establishing the glory of our land unpartitioned as it existed.
Shalom HZ 
The red dot that married hindu women wear on the forehead- is it painted or tattooed ? What is its meaning ? Did Jewish women also use to wear this mark ?
Shalom Zelhar,
long time!
the red dot had some religious significance in the past, related to enerygies inside the body according to Kundalini yoga principles.
http://en.wikipedia.org/wiki/Bindi_(decoration)
"The area between the eyebrows (where the bindi is placed) is said to be the sixth chakra, ajna, the seat of "concealed wisdom". According to followers of Hinduism, this chakra is the exit point for kundalini energy. The bindi is said to retain energy and strengthen concentration. [4] It is also said to protect against demons or bad luck"
But generally nowdays its considered as decoration, It is in the form of sticker which can be removed anytime. Some Pakistani Punjabi Muslims women wear it too. While many Bangaldeshi muslim women wear it as well. Many Christian women wear it in India. It now seems to be followed as a custom or South Asian tradition in South Asia, not much to do with religion. But the existance of this customs can be traced back to Hinduism.
I dont know if Indian Jewish women use it. But there is possiblity they might, as many Israeli tribes living in India had started wearing Indian traditional clothes.