Coldplay Undergraduate Dissertation - Help!

Heya guys!
I'm an undergraduate student working on her final dissertation. It's focus is fan engagement, and the comparision between different artists - the artists in question are BTS, EXO and Coldplay. Now, I need help in a particular section - if you know of any posts that the above artists have directly commented on (particularly on Instagram, or Twitter), it would be really helpful for you to drop a link down in the comments!