Social movement or social hashtag?

I can't go on Facebook without feeling overwhelmed by the colors of the French flag. Over the weekend terrible terrorist attacks happened all over Paris. This tragic event has resulted in people all around the world coming together to show their support and love for Paris. It seems everyone on my timeline has taken part in is to add a French flag filter over their profile photo. The purpose of this is to have a physical representation of the world showing their love  and support for Paris in such a dark time.
I love seeing everyone come together like this on social media. It truly shows how through new technology we can change the world. Before social media it was more difficult to have a physical representation on something and even more difficult to spread it across the world. However there is a sense of social pressure that also comes from changing your profile photo. I have not added the French flag to my profile photo for numerous reasons and for some reason when I go on Facebook I feel a sense of pressure to do so. Nearly over 90% of my friends have already changed it so why don't I? It's not that I don't care or show empathy for what happened to those in Paris. It's completely the opposite.
When people post statuses after traumatic events like this with popular hashtags such as "#prayforparis" I get a sense of cheesiness. To me it seems that people use these events and create social media gimmicks out of them. It seems that by falling into these gimmicks we are simply just following what everyone else is doing. It's not only the Paris events that have made me feel this way. Other minor and major events recently have all been put on social media following a catchy hashtag. Once everyone on your timeline is posting using this hashtag there is a sense of force that makes it seem like you need to too. These changes are only for our own friends to see so why do I need to prove through my profile photo that I care? There are many other ways for me to show my support for those in Paris but I do not feel that adding a filter is the correct way to do so.