Criticizing an entire religion can and sometimes falls under criticizing its core method of delivery. The book of choice. Religious people will and do feel offended at times even if you aren't specifically addressing them because you may have taken to task passages in their book or made comments on others within their religion. Or said something about their God, aka blasphemy. It often operates like an in-group mentality, or as Christians call it, a flock.
But sure, when being critical one always has to make sure not to unfairly generalize or go after someone personally who doesn't deserve your ire. To look at the polls above however and say the vast majority of Christians in America oppose gay marriage should not be conflated with painting everyone the same, but it sometimes is. This goes for the Islamic world as well when at times people are simply looking at polls and commenting on how 98% of a country can say homosexuality should be illegal or punishable.
Let's not forget apostasy laws and blasphemy laws are still things
http://www.pewresearch.org/fact-tank/2016/07/29/which-countries-still-outlaw-apostasy-and-blasphemy/
I thought this pewresearch article was interesting because India was highlighted and I had no idea that India had blasphemy and apostasy laws given there have been open atheists in both government, media and society. A closer look therefore gave me this:
https://berkleycenter.georgetown.edu/essays/national-laws-on-blasphemy-india
Now I can understand the restriction on free speech here given that India is home to many religions and simmering Hindu-Muslim tensions in many parts of the country. It is very easy to say something that is anti- Hindu/Muslim/Christian/Sikh/Jain and light a spark that can lead to mob violence and the death of thousands. That's why it's often classified as 'Hate Speech' - inciting hate against another religion.
Has this law been misused? Yes, religious groups have often used this law to proclaim that their religious sentiments have been hurt and tried to get the offenders arrested. But it's not just religion. India most definitely does have a free speech problem.
Now, I found this part interesting as well and pertains to the discussion here on western intervention:
Some blasphemy laws have been on the books for decades and have endured in spite of dramatic political and social changes. In
Pakistan, for instance, blasphemy statutes have their origins in the country’s colonial past, when British rulers first introduced penalties for insulting any religious beliefs. These laws remained in effect after Pakistan’s independence in 1947 and have since increased in severity.
That's right. The current blasphemy laws in Pakistan were first introduced and enforced by the BRITISH. This is true of the laws against homosexuality in India as well. Before the British came to India, the country was rather liberal with regards to sexual proclivities - it's where the Kamasutra was written. There are several Hindu texts that have Gods engaging in homosexual sex, there are transgender Hindu Gods and there are carvings in Hindu temples of people engaging in homosexual sex. It was the British who made homosexuality illegal in India and that continues to this day.
I would think that's why Christian African nations have these strict laws against homosexuality. It's a legacy from their colonial era.
Sure the British then took all the riches from the countries they plundered. They developed with their booming economy - having good education. They could afford to modernize and become more liberal and allow for democracy and independent thinking to flourish. The same with the other colonial European powers. The same with the US benefiting from slavery.
The Arab countries, South Asian countries, African countries etc. have not had that luxury till date. India is still in the throes of poverty and illiteracy and with it's booming population and lack of resources does not look to be getting much better. Pakistan/Afghanistan etc. is mired in religious extremism because of the constant foreign intervention in that part of the world. It's the same with the Arab countries. The African nations which are still rather young and recovering from decades of colonialism are reeling under poverty and corrupt governments.
So again, when Maher and Harris criticize Islam only for being inherently violent, by not examining the underlying reasons for that, they are being disingenuous. They have been given plenty of chances to do so - Greenwald's confrontation with Maher - but they ignore that.
All religions are inherently violent and intolerant. Except maybe Buddhism? I am not familiar with Buddhist religious texts but the Buddha created the religion to get away from some of the nastiness of Hinduism. The goal here is to encourage a fair and free society, improve education and lessen poverty - all of which would improve independent thinking and wean people off religion.
Though, it's often surprised me that the United States continues to be a conservative christian nation.