Hizballah, in crossing the border (an act of aggression) fired katyusha rockets into Israel as cover (again an act of aggression), prior to any Israeli reaction. Further, if you bothered to read what HRW stated about Hizballah war crimes, you would understand that the very fact that they fired weapons that could not be aimed precisely into areas where there were civilians, this action constituted a war crime. This is in addition to the clear war crime of not granting the basic rights to the prisoners that they hold. HRW has lambasted Israel for its wrongs in this war. Israel did not try to bully, threaten or prevent this. Hizballah, on the other hand, has actively tried to block HRW presenting its case publicly against them.
U.S. Democratic Senator Merkley airs support for Iran nuclear deal (Reuters)
from the article: Rights group says silenced by Hezbollah, Lebanon over report