Anyone can worship Salagrama.
Anyone who has attained mantra diksa initiation properly and is worshiping Salagram Sila, whatever he offers to Salagram Sila, he
achieves the abode of Lord Visnu. Of this, there is no doubt. I
personally say this. (Hari Bhakta Vilasa 5.374 from Padma Purana)
Those people who are the lowest of mankind and who are controlled
These books are written on a period of war and killing any men during war is not a sin. But Brahmins are not soldiers but people who pray to God and advices the Kings.
In the modern era, the Brahmins can be compared to Medics in war zone. They help both our troops and theirs and no soldier will hurt medics.
Killing medics is a big sin now.
Killing Brahmins ...