you sound more distraught than hopeful, so let me add some perspective. what's amazing is that relative to opportunity, terrorism (and mass shootings as a subset) is extremely rare. many, many things will kill you (or a loved one) before terrorism will (accidental shooting, drowning, overdose, heart attack, car accident, etc.). while we all do have a violent side, we are a remarkably empathetic and social species who largely follow cultural and moral rules for the good of the whole.
on your last point, it wasn't terrorism or just zenophobia that caused genocide, but state actors (and their leadership) lusting for power, notoriety, and wealth. that's rare too, since it took a perfect storm of many bad circumstances and decisions (from what i understand).
that's not to say don't be vigilant or push for change (since rare doesn't mean impossible). just don't feel hopeless or a sense of despair that things are somehow so much worse now.
on your last point, it wasn't terrorism or just zenophobia that caused genocide, but state actors (and their leadership) lusting for power, notoriety, and wealth. that's rare too, since it took a perfect storm of many bad circumstances and decisions (from what i understand).
that's not to say don't be vigilant or push for change (since rare doesn't mean impossible). just don't feel hopeless or a sense of despair that things are somehow so much worse now.