this right was not "designed", it's natural. defending oneself against anyone and anything is a natural right. just like breathing. the Second Amendment affirms that right. The 2A says the government cannot take this right away. I've heard many pro-2A people say the 2a grants the right. wrong.
if one believes the government can legitimately grant rights, than one concedes the government can take rights away.
The United States government is a system of checks and balances. The courts balance the legislative, the legislative balances the executive and the executive balances the courts by selecting it’s judges. While the people balance all three from the ballot box the last balance is the 2nd amendment.
When Legislators, executive branch bullies or dictatorial judges will not follow the voters will they are in serious danger of of losing their life from long guns. This fear should help them to make good decisions but because the courts have already eroded the power of the 2nd amendment they do not feel as threatened as they should. I do believe change is coming. I just don’t know which way the change will be.