Glorifying acts of violence is something we will not condone or allow here. There is a difference between arguing whether actions of a particular party were justified, and saying that you're happy someone made a decision that ended two lives and ruined countless more.
As far as we can tell, neither of the victims had committed any heinous acts that would justify delighting in their death. You of course are free to disagree with their actions. You may find them reckless, inappropriate, or stupid. However, to be happy about this outcome is frankly disgusting. Two people are dead and a young man, who perhaps you feel was misguided, faces life in prison. This is a tragedy. Regardless of which side you think is right or wrong, we should all hope for peaceful solutions. If you think one side is to blame, you should hope for them to come to a more reasonable position, not for their death.
We will not platform hate speech. Perhaps there are fringe examples (for example it would probably be acceptable to be happy that Pol Pot is no longer of this world), but except in these most extreme cases, comments expressing the desire for the death of person or group will be met with bans, likely long ones, and potentially bans from political discussions altogether. Likewise, incitements to take violent actions, veiled or otherwise, and attempts to dehumanize a group (an important first step in a campaign of violence) will also not be tolerated.