The reason why Hindus don't get offended by cow sluaghter is because they know how ridicoulous and bizzare their beliefs are. That's the reason why even Muslims continute and will always continue to slaughter cows irrespective of the laws.
On other Islam is the only true religion and prophet mohammad(pbuh) was the greatest person to ever walk on this planet. So Muslims tolerating any disrespect towards him is out of question.
Well we happen to think you're a joke so we make fun of you. What's wrong with that? It's not like your capable of doing anything other than killing unarmed people. Why should we worry about you?