system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: The Koch brothers and their influence on politics.
gpt
The government was worried about people donating lots of money to candidates allowing them to buy more commercials, and pay more people to help them get elected.  They were worried that If people could do that the politicians would do lots of things to help out their friends who helped them get elected.  

So the government passed a laws that said you couldn't give a politician more than $2500 for an election.  Some people didn't like this law, they thought that money was the same thing as speech, so they asked the supreme court to look at the laws the government had made.  The supreme court agreed with them, and said that you could spend all the money you want on a politician's election as long as you don't give it to the politician.

Now people with a lot of money like the Koch brothers can go and find candidates they like and buy all the ads they want telling people to vote for their candidates, and no one can do anything about it.