The Wicked Behavior of the Criminals and Their mocking of the Believers

Allah says;

إِنَّ الَّذِينَ أَجْرَمُوا كَانُواْ مِنَ الَّذِينَ آمَنُوا يَضْحَكُونَ ﴿٢٩﴾

وَإِذَا مَرُّواْ بِهِمْ يَتَغَامَزُونَ ﴿٣٠﴾

Verily, those who committed crimes used to laugh at those who believed.

And, whenever they passed by them, used to wink one to another.

Allah informs that the criminals used to laugh at the believers in the worldly life. In other words, they would mock them and despise them. Whenever they would pass by the believers, they would wink at each other about them, meaning in contempt of them.