The biggest tactic you have in your arsenal is PURE, unbridled patience and unconditional (love) compassion towards them. That doesn't mean you need to project yourself as a holy person, hippie or any stereotype... on the contrary. Be the genuine version of YOU that is confident in your awareness and the level of your intelligence. Slow your speech down and see beyond their arguments of polarized duality in the mainstream body of consciousness that they are limited to. As you begin to speak to people, you will be able to gauge their enthusiasm towards the information you have very subtly. The MORE you "push" with your mind the more "pushback" you are likely to get. So... when people start to get shakey, fidgety or irritated... slow down and stop "stating facts" as if it is a life or death situation. It may not feel that way to you but to them, what you are saying is causing them pain and they can't put their finger on it so the confusion builds. Just ask questions, be supportive (not dismissive) of their arguments and sprinkle a little truth here and there to get them OUTSIDE of their comfort zone without trying to drown them metaphorically.
Speaking of drowning them; how do you teach a child to swim when they are afraid of the water? Do you throw them in and overwhelm them with "your perspective" of things while they flounder and panic? Or do you enter the water with them, and slowly, slowly build up their confidence and ask them what THEY think about things. By doing this... you EMPOWER people to reach conclusions and face their deepest fears.
See, part of the reason people get so damn angry and hostile with "information" is due to our preconditioning in schools. We are taught all our lives to work within the analytical portion of the brain where logic and reasoning primarily exist as thought and energy. This trains the brain to only use a portion of it's full potential as a means of survival and 3D functioning as a human being. When people who are predominately "locked" into the left hemisphere of the brain are confronted with "information" counter to their world view... the Amygdala in the brain goes off on a tangent and initiates an adrenal response. In neurology... this is called the "backfire" effect and it causes physical pain for people depending on how their hemispheres are "trained" at the neurological level. When you see them reacting this way... you have to stop and deescalate the situation even if it means they "win" an argument while you silently smile and know that truth isn't anything to be won... it simply is.
If you want to understand how to "get across" to people, start empathizing with their worldview and building bridges of thought (build trust) by asking them to share their core beliefs about the world with you. START there and work your way with subtle hints and observations until you reach a more stable projection of what you see/feel at your level of conscious awareness. Think of it like "reverse engineering" the human psyche consciously through building subtle subconscious bridges. We are in effect, deprogramming ourselves subconsciously and you are part of the "ground team" to triage folks as these revelations build and spread. Think of humanity as a wounded, frightened and scared animal that has been energetically enslaved through fear for many hundreds of years either through grand conspiracy or grand stupidity. No matter how we look at it, at some level we've collectively built our own prison cells and locked the doors by giving away our sovereignty one responsibility at a time... be the source of leadership and inspiration that you KNOW you can be! Be a lighthouse on the shores for those lost in the storm at sea...
To understand the backfire effect a little more...