Verse 5:32 of Holy Quran, "If anyone slays a person, it would be as if he slew the whole people: and if anyone saved a life, it would be as if he saved the life of the whole people"
definition of heartless is different for everyone, to me calling to kill 2% is heartless and for you it's not. who decides whats dictates "contaminated infected sub humans" the solution to problems is not killing 2% its changing yourself and others around you, this is the only way to make society better. societies are decorated over decades and they are fixed over time as well, there is no fast solution!