I’m going to explain this for you as simply as possible:

So… Imagine a scenario where a driverless car is rolling towards a baby in a carriage. Now imagine there are 10 people, one of them being you- standing about within eyesight of the car that is heading towards the baby-

In this scenario:

The car = trump.
The baby = our democracy.
The 10 people = the only influence able to change the scenario.

Now, what ties this all together to make it more relevant is that we will now give the people standing about the choice to to push the car into the baby, do nothing, or stand in the way of the car in order to stop it.

This means that:

5 people that will push the car into the baby = Trump supporter.
1 person that will do nothing = you.
4 people that will push the car away = Harris voters.

So now… Here we have two groups of people that have no intent whatsoever to help the child in any way. One- directly and the other indirectly- and only one group that is trying to stop the car.

Those standing around watching, (you) could help stop the car- but don’t. Thereby watching the car roll over the child because not enough people helped stop it.

You made the choice to withdraw your help and thereby share in the responsibility.