It is absolutely true especially in the context of heed to violence by sectarian movements within Pakistan ----- however, without exception, there need to be clear and defining parameters at least between some ISMS, such as Islamism and terrorism, patriotism and nationalism, Judaism and Zionism and so on and so forth. .....
Any Ism can be OK if it is based on tolerance for religious, ethnic etc. minorities, harmony among people AND peaceful citizenship of the world.
All the ISMS can turn out to be a nightmare if they lose tolerance and peacefulness.