Slacktivism/clicktivism is ridiculed. At the same time, organising - or taking part in - a demonstration is difficult and risky. IfWeUnite enables people to come together to take collective action, without risking their livelihoods.
Instead of everyone going to a demo to one central location at one time, people can come to multiple locations, on their own.
So eg when protesting against the Chinese government in HK, people can protest by "checking in" anonymously at various locations (police stations, other central government buildings), rather than having to pile into a central square where they face police chicanery.
PS: Sorry, challengepost isn't letting us add all team members..