What was Roosevelt warning against in these sentences?

I hail as a benefactor every writer or speaker, every man who, on the platform, or in book, magazine, or newspaper, with merciless severity makes such attack, provided always that he in his turn remembers that the attack is of use only if it is absolutely truthful. . .

Falsely accusing people of evil practices
Writing too passionately on certain topics
Telling the truth will lead to retaliation
Forgetting that journalism is very powerful

Question

What was Roosevelt warning against in these sentences?

I hail as a benefactor every writer or speaker, every man who, on the platform, or in book, magazine, or newspaper, with merciless severity makes such attack, provided always that he in his turn remembers that the attack is of use only if it is absolutely truthful. . .

Falsely accusing people of evil practices
Writing too passionately on certain topics
Telling the truth will lead to retaliation
Forgetting that journalism is very powerful

NoLuvRoss · Answer

Basically what he was doing was Falsely accusing people of evil practices

nettym · Answer

Theres a direct answer again :/ @noluvross

kekeman · Answer

Oof