Good advice for all redpilling. The best way to do this is asking questions about odd things, discrepancies. Questions that do not have a clear answer. This means that you should not answer the questions either. You should also say that you don't know, could be this, could be that. Who do you believe?
The best red pilling session is when the other person figures something out and tries to convince you about it. They start to tell you, there must be another shooter. That kid was a patsy.
There is still a place for red pilling by telling people the whole story but it only works if you have a map to show. Like this one about Obama for instance:
https:// threadreaderapp.com/thread/967778284057563137.html?refreshed=yes
If you can't create a map like that or you don't have an opportunity to show the whole picture like this, then you would have to be a master storyteller to be able to tell this story and not trigger the person before you get to the end and reveal that you are telling the story of Obama.
Best to stick with questions that have no clear answer and leave them hanging at the end of your conversation. Red pilling is about waking up people's curiosity and thirst for understanding. You can never get people on the Trump train through red pilling. They join on their own when their curiosity leads them to investigate and the enlightenment hits them in a private personal moment.
To red pill effectively you have to be able to step back and let them have that private personal moment. If you love someone, set them free. If they come back, they are yours, otherwise they never were.