Question Summary:
Will passing appreciating comments on Haraam activities make one a Kafir?

Question Detail:

I found these statements somewhere and want to check their authenticity.
When a person listens to a singer or sees any haram action, he will lose his faith as soon as he says, "How nice!" to refer to haram. If some lady is dressed indecently and someone says "Good" on that, he loses his faith. 
Now I want to ask that passing of appreciative comments make a person to lose his faith. It is very common these days. Nearly every Muslim appreciate haram things in one way or other. 

Answer :

In the Name of Allah, the Most Gracious, the Most Merciful.
As-salāmu ‘alaykum wa-rahmatullāhi wa-barakātuh.
Please refer to the following link: 
http://www.askimam.org/public/question_detail/34254
 
And Allah Ta’āla Knows Best
Abdullah ibn Mohammed Aijaz
Student Darul Iftaa
Baltimore, USA
Checked and Approved by,
Mufti Ebrahim Desai.