Depends on what understand the termed of "rigged" as. Is something considered rigged if everyone knows its rigged and the casino even tells you its rigged?
The reason I say this is because all gambling games have something called a house edge. The probability of the casino winning your money is higher than the probability of you winning the casino's money. It has to be this way, otherwise casinos would not work in the first place. They would not even be casinos but rather give-away platforms.

But some casinos do sometimes take it too far and lower your odds of winning even more without giving you notice, but this will usually only happen to unregulated casinos which have their headquarters in some corrupt third world country. Luckily, with some DYOR, that can be easily avoided.