Prompted by recent events. The use of a Like icon (whether thumbs up or otherwise) is fine on social media for lots of things, but certain subjects and events should not be "liked" or use such a 'breezy' icon - for example the passing of a user, or a tragic event. The thumbs up/like paradigm is almost universally accepted when used appropriate, but it can cause UX problems when the context changes to something more serious.
So, is there any equivalent set of icons and words that might be substituted to indicate approval or agreement or expressing empathy with unfortunate news? Something other than an X or tick mark. (I am assuming some kind of sentiment analysis or metadata can detect the nature of the event automatically or by user selection.)
Any examples social media or community websites out that are good examples of sensitive ways to use wording and icons to handle this issue?