وَجَعَلْنَاهُمْ أَئِمَّةً يَدْعُونَ إِلَى النَّارِ وَيَوْمَ الْقِيَامَةِ لَا يُنصَرُونَ
Pickthal 28:41] And We made them patterns that invite unto the Fire, and on the Day of Resurrection they will not be helped.
**
وَأَتْبَعْنَاهُمْ فِي هَذِهِ الدُّنْيَا لَعْنَةً وَيَوْمَ الْقِيَامَةِ هُم مِّنَ الْمَقْبُوحِينَ **
Pickthal 28:42] And We made a curse to follow them in this world, and on the Day of Resurrection they will be among the hateful.
When ALLAH has decided that curse shall follow em in this world, then whats the point of stopping shias from cursing em ?