Every question you asked could have been easily answered by googling 'Illuminati' -_-
What he said...
In reality....when someone becomes TOO powerful, they ARE WARNED to calm down or THEY WILL BE KILLED.
Michael Jackson - Was becoming too powerful, had him convicted of molesting a child to ruin his rep, but, it wasn't working and he was on top once again, hence, he was killed.
Tupac - Been in jail COUNTLESS times for stupid bullshit, such as being convicted of rape when he was asleep and his friends did it. After all of his sentences, he was still on top and becoming a powerful leader, he himself said he will be on the top of the presidential election within 4 years back in '96, he was killed.
Notorious B.I.G - I haven't followed his story for awhile so, I can't really write about him but, I can guarantee he was killed due to similar reasons as the people in this category.
Eazy-E - Made a record "Fuck Tha Police" and had the Vice President of '95 speak about him on LIVE TV telling him his record has no place for our society and was CONTACTED by the FBI telling him to "calm it down a little." He never did and was killed and his excuse was "dying of AID's." His son, Lil Eazy-E even said in a record "How'd he go from having bronchitis to dying from AID's?" - Meaning he knows it's bullshit as well. also, not to mention...Eazy-E's group "NWA" which is an abbreviation for "Niggaz With Attitudes" caused over $1 Billion in damage and over 50 people died due to a riot in California. They had enough supporters to cause a riot where people were snatching cars, burning buildings, and shooting corrupt cops.
And many others....
ANYONE that is AT THE TOP OF THEIR GAME is either dead or they are ONLY at the top of their game because they are NOT leaders. For example...
Lady Gaga - Look at her music video, every 3 seconds there is an Illuminati sign, meaning she worships them
Lil' Wayne - He's missing Chromosone 23, literally....no one knows WTF he's talking about along with the rest of his stupid gang.
Wiz Khalifa - Same shit, all he raps about is colors, weed, and the club
Mac Miller - He made a song about Turkey Sandwiches....'nuff said
Eminem - All he raps about is his daughters, wife, and love....doesn't do anything for anyone
Rihanna - Illuminati bitch, she herself had a music video where one she put "Rihanna is the Illuminati Princess" and another one where you can see the symbol.
Jay-Z - There's a picture of him holding up the symbol
And the list goes on...
ANYONE who's strong and DOES NOT fear the government will be killed. Those who FEAR THE GOVERNMENT will NOT be killed. Instead, those who fear the government are basically slaves.
EDIT: Everything I spoke about was Music-Industry-wise. I didn't speak about the other shit.