What limitations are you talking about? What can be a limit to being physically assaulted by trash every morning?
Which books are these ahadith from? Facebook posts are not a good source in a debate. There is a reason we discuss widely known hadith in case we do not agree on the context where the others are from.
Do you agree that the prophet endured personal hardships physically as well as verbal attacks by his enemies?
What salman taseer did was nowhere close to blasphemy even by the most ignorant standards. Saying that the blasphemy law should be abolished has absolutely nowhere in its whole composition insulting the prophet. If he says it should be abolished then you bring reason why it should not. That is the maximum our religion and law allows. Taking life is so easy, when will you understand and follow our prophet in how he made shining examples for even the toughest of its opponents to stand and accept its majesty. Honesty and Justice for all.
If you don't have courage, tolerance to listen to the argument put in front of you by the one you are having discussion, you should cease to discuss the matter!
In your case when you are provided with Ahadees from authentic books of ahadees you are asking me to tell you the source? I would suggest you use your eyes and brain and IF you have any knowledge about Islam i.e What are the most authentic books of Ahadees etc,
Lets talk about specialisation, When you have a legal problem, you go to a lawyer, when you have a health problem you go to a doctor? May i ask why dont you solve your legal, health, physical problems yourself? Why dont you read all the medical, legal, engineering and ALL books yourself? Why do you have to go to the specialist?
Even if you get to know the remedy to headache is coffee sometimes do you know the type of headache you have, why the coffee is the cure? I can explain is MUCH MORE but i assume i am talking to an adult who can follow logic.
All that above is because you dont have the specialisation! Now we ask ourselves a question purely neutrally, to whom do we go when we have a religious problem? The ones who have deeply studied qur'an Sunnah and devoted their lives to understand the aspects of the subjects etc? They are know as Maulana's And Muftis, Ulema is commonly used keyword for such people.
If you see around ALL of the religious sections are protesting!
So let me ask you if Doctors of All pakistan Say that The cure of XYZ desease is ABC medicine, and a bunch of people start cursing them, How would this bunch of people look alike?
and to limitations i mean, There are LIMITATIONS, You dont get to insult ANY Prophet PERIOD.
Lastly, I would like to say you don't have a certain opinion on this Law either!
Let me ask you, Is the death penalty for blasphemy law justified?
Anyone Abusing ANY prophet should be given freedom of speech?
When an Accused has accepted his/her crimes, Some other person calling it injustice and cursing the law is not insult of the judge?