Source 4: An account provided on a present-day social media platform
Try searching the internet more generally or any social media platform to findpublic opinions expressed about a particular event.
Tips:
Focus on exact phrase searching ("Berlin Wall")
Know how the social media platform aggregates, such as through the use of hashtags (#berlinwall)
Look up the author or content creator so you can learn more about their approach and biases, which will help you to better understand their point of view
X (formerly known as Twitter) also offers advanced search features. Consider using filters like those for Engagement (only showing content with high engagement or that went viral, perhaps) or for date (consider limiting to timing with anniversaries, elections, or political events).
You can also search TikTok -- not just scroll content that is served up to you! Try searching for keywords in quotation marks ("Tiananmen square") or as hashtags (#tiananmensquare). Note that some content will likely come from current media organizations rather than individuals.