  Reddit.com is a popular social media platform among young people. Reddit
users share their stories to seek support from other users, especially during
the Covid-19 pandemic. Messages posted on Reddit and their content have
provided researchers with opportunity to analyze public concerns. In this
study, we analyzed sentiments of COVID-related messages posted on r/Depression.
Our study poses the following questions: a) What are the common topics that the
Reddit users discuss? b) Can we use these topics to classify sentiments of the
posts? c) What matters concern people more during the pandemic?
  Key Words: Sentiment Classification, Depression, COVID-19, Reddit, LDA, BERT
