The issues between C & P has been going on for roughly 20 years. Besides the fact C liked to be in the hood, some of their tension started over P trying to muscle C for C's artist Magic.
C-Murder had his own label, TRU Records, that was distributed thru No Limit. C signed Magic (and later Currensy) to his label and developed him. Well, soon as Magic started getting buzz, P told Magic to rep No Limit on songs and to stop reppin TRU. C obviously was mad when he heard.
Magic's first album had TRU Records logo (small but there) and had C-Murder as the co-Executive Producer with P (notice the difference on font size and order).
Peep how the 2nd Magic album doesn't have TRU Records on it and Master P is the only Executive Producer
When C-Murder got locked, P recruited Currensy to the New No Limit. Currensy felt loyalty to C-Murder and only joined after C gave his full blessing. That's why Currensy always shouts out C-Murder and TRU Records.
KLC talked about the situation here @ 52:40 (timestamped to start there below)
When C was locked up and going thru his trial, P was on the Nickelodeon tip and was making some public statements saying that C brought the situation on himself. C rightfully felt that P was hurting his case, especially being his brother a popular public figure making headlines saying unfavorable statements. This is from 2005.
Here's another 2009 radio interview where P said some stuff about C bringing it on himself and you hear where C called in responding to what P said.
Sadly, they didn't speak for about 12 years behind all this and just reconciled in 2018.
P is right about C's choices causing him to be in that situation. I get how the situation can be frustrating as the older sibling. BUT the thing is you NEVER go against the family to outsiders, especially when they're down and facing life in prison.
The personal shots at Monica about her marriages wasn't cool at all and makes P seem catty. Him saying C is never coming home is just sad and something you should NEVER say in public like that. You hate to see it.