This type of tweets or ideas are not useful, and they are just too easy to produce.
We all know people can have nice words and hearts. That does not prevent them being indifferent to what they did to other peoples or their country did to other countries.
I do not want politicians to use tweeter so much. Neither to say kind words or hateful words. Tweets are not for serious work of solving society problems.
This is missing the forest for the chirping birds. Of course a message can be useful: in times of fear, people want reassurance. That's probably why (as another top-level comment mentions) the top reactions ever on Twitter are after terror incidents.
As for how Twitter should be used, it's a communication medium. People can use it however they seem fit. Would it seem more important if the message came via telegraph, telegram, telephone? History adapted to all of those as well. "Sighted ship, sunk same", "WAR", the Zimmerman Telegram, etc.
Tweets are also making a connection where President can reach citizen without the help of Fox or CNN, and we don't have the retrospection yet to know how this will evolve; it's too early to kill this kind of communication in the crib.
But thanks to the internet and platforms like Twitter, it may now be possible for a politician to reach millions of people without paying the Fox and CNN tax.
I miss when social media was about sending messages to a cute girl you seen in class, or finding out where the party was this weekend. I really couldn't care less about Twitter, or who responds to the President's tweet with the best comeback. I thought Obama tweeting was undignified, and then Trump just took it to another level.
We all know people can have nice words and hearts. That does not prevent them being indifferent to what they did to other peoples or their country did to other countries.
I do not want politicians to use tweeter so much. Neither to say kind words or hateful words. Tweets are not for serious work of solving society problems.