Authorities investigating the Jan. 6 insurrection at the Capitol say two extremist groups that traveled to Washington along with thousands of other Trump supporters weren’t whipped into an impulsive frenzy by President Donald Trump that day. Instead, authorities allege evidence points to the Oath Keepers and the Proud Boys laying attack plans well in advance. Internal communications and other evidence emerging in court papers and hearings show how authorities are trying to build a case that small cells hidden within the masses mounted an organized, military-style assault on the heart of American democracy. Defense attorneys accuse prosecutors of distorting their clients’ words and actions to falsely portray the attack as premeditated.