Why were two protesting Democrats expelled from the Tennessee House?

Contributing sentiments towards policy:

57% : Before the expulsion votes, House members debated more than 20 bills, including a school safety proposal requiring public and private schools to submit building safety plans to the state.
48% :"Rather than pass laws that will address red flags and ban assault weapons and universal background checks, they passed resolutions to expel their colleagues," Mr. Jones said.
38% :"Rather than debating the merits of the issue [of gun control], these Republican lawmakers have chosen to punish, silence, and expel duly-elected representatives of the people of Tennessee," Mr. Biden said in a statement.
37% : In an extraordinary act of political retaliation, Tennessee Republicans on Thursday expelled two Democratic lawmakers from the state Legislature for their role in a protest calling for more gun control in the aftermath of a deadly school shooting in Nashville.
36% : The bill did not address gun control, sparking criticism from some Democrats that it only addresses a symptom and not the cause of school shootings.

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