Fighting the lefts false narrative is a tall order. They firmly believe that a lie told frequently enough becomes truth. Unfortunately, a gullible electorate gets easily sucked into the lie. A generation or two of the teaching institutions focused on indoctrinating our youth, a biased liberal press that has lost any sense of objectivity, and politicians that lie, deceive, and blow with the wind in order to insure their own personal position and greed, has stacked the deck. Given all this, it's likely that the attack on the Constituion and our Bill of Rights will continue to be gradual as opposed to a dramatic change due to the fact that a sufficient number of a conservative minded populace still retains a sufficient balance of presence in the country..........BUT, as the OP states, our children and grandchildren are destined to a world that looks a lot like the sorry societies across both oceans, and to our north and south. Those of you that think you are safe from all this and live in a Utopia, BEWARE, most of the 2nd Amendment attacks are flagrantly and unconstitutionally enforced under States Rights....many time by one person like the Attorney General! Few of these are being driven to the higher courts, and when done so, are directed to ideological judges and ignored. It is likely that within a few years, Colorado will be a mirror image of California, New York, Massachusetts, etc....even Texas!. Watch your big cities!
Some ideas on how to fight this?
-Vote... educate yourself, and influence others. Pay close attention to your liberal State legislators. Become active in organizing to fight them. As mentioned, they operate in the shadows. As opposed to National level politics, State level politics can be flushed out and beaten if an effort is made. While rare occurrence, when you find an honest politician that stands for our rights, support him/her.
- STOP the indoctrination of our youth. Force yourself to let your children and grandchildren understand that they should not take the word or viewpoint from their teachers, professors, and peers. Unfortunately, this has been the case , and has intensified over the past few decades. Shame on them!! Our progeny should trust themselves "before" others. Question evertything with the understanding that they may be being pushed into someone's agenda. Ask them if they would like to be one of the Sheep, the bulk of our population! ALL social media, news reports, Hollywood, and all statements from politicians should be suspect and validated.... Residing in the Northeast, I made the conscious decision many years ago to teach this my with my children and grandchildren. While initially chastised by educators, it has actually worked quite well, producing independent, successful, free thinkers that don't roll over with the masses...my kids/grandkids despise the thought of being classified as being one of the sheep.
-Support the NRA and other gun rights groups. SUPPORT them...they remain one of the most highly funded and influential lobby groups in the country. Overlook the occasional missteps....overall, they are important! Liberal politicians truly fear them!!
-There are estimated to be many firearms in our country as there are people in this country, owned by honest, law abiding citizens, that contribute to our countries success, and making it unique amongst all societies. They are used for hunting, shooting sports, self defense, collecting, or simply because one has the "right" to own them. The criminal element that breaks the law is a fraction of 1%....Liberals, we've got your number! Enforce the laws and go after them! Unlike many of those pitiful societies commonly referenced from across the ponds, Americans will stand up for our 2nd Amendment Rights.