Violence and bloodshed anywhere and for any purpose should be condemned.
Having said that, each and every country has soverign right to enact laws however these are considered unjust by others. For example see anti-minatret law in Switserland, anti-Burka laws in France, etc. and pro-hindu judgement on Babari mosque case in India.
Second point: Do muslims make utterances againt Christian, Jewish, Hindu, Bhuddist or Sikh religious personalities/leaders anywhere in the world? If yes, then can anyone quote examples. Why some people comment on our prophet Muhammad (PBUM)? Just to offend Muslims?
Pakitsan has its laws to protect Muslim sentiments, which may not be perfect . However, has PPP government or any other group put forward proposals to reform or to prohibit misuse of Anti-Blasphemey Act during last 10 years? It is easy to play politics than to put concrete proposals.