Can you guarantee that? Nope, of course not.
So what about the Ohio shooter, was he a Trump supporter too?
You have a lot to learn about the workings of the fbi and other intel agencies. Once you begin to learn from historical research and from reading books written by ex intel folks, some retired, some who got run out for Whistle Blowing, then you can come back and say "let's just watch this and see if there is anything working behind the scene".
You are young and you care about things I can tell. Just keep digging and take no political stance. I am one of millions who voted for Obama as a result of the bush dynasty running our country into multiple wars by propaganda and out right lies. bush/clinton/obama are all team players. I was not initially a Trump fan and few people knew much about him. The new guy on the government block so to speak. After much research it was evident to me he was not an insider to continue the bush doctrine of a new world order as bush proclaimed in a public speech in the early 90's. I have been watching these things since the 1960's. My research has taken me to early European development of the banking system. Eventually with time one can see the picture for what it is. The devil is in the details and until you find those it is impossible to say definitively what is going on. Keep up your curiosity and look beyond what the media is saying. And learn to notice how they say and what they omit to say. Get away from the extreme sources that are playing to fear and emotion. Both extremes are manipulated to keep us inflamed and in opposition. That is how you control the narrative and the minds of the masses. Stay focused, entertain all angles, and after time as more data comes out and as your analysis comes together the picture emerges with more clarity. Bottom line after many years of doing this, I can truly say we are being played by a powerful group with no limits on financial resources and with no limits to what they will do to achieve their goals. Best of luck and remember, we are all in this together and need to root out the corruption at all levels that has taken over control of our system of government. We are not free, and until Trump no president since Kennedy has had the balls to speak out and change things that threaten their power and possible exposure. That is why I support his efforts.