Which ones? There are plenty of rich working class people that I consider comrades. The issue we socialists have isn't income, the issue is class, which is quite different.

Your class is determined not by your income but by how you receive your income. A working class person makes their income by selling their labour to a member of the bourgeoisie (capital-owner), whereas a member of the bourgeoisie makes their income by stealing the surplus labour from a member of the working class.

There are working class people that can make quite a bit of money. Athletes and actors for example. Although in many cases once people make that kind of money they also become members of the bourgeoisie by investing it in passive income such as landlording or stocks, that is not true of all of them and is very much something that should not be assumed.

As for killing the bourgeoisie, I am in favour of simply phasing them out. Although I am not naive enough to think that they will just allow that to happen without trying to kill every last one of us first to prevent it, and believe in the need for us to be prepared for violent action when they do turn to that option. It is not an act that I think should be advocated for by itself, other than with some hefty layers of irony as a means of generally promoting militancy.