BNP has announced holding of protest rallies across Bangladesh over the arrest of their leaders and activists during the by-elections to the Dhaka 18, and Sirajganj 1 constituencies.

The protest rallies will be held in Dhaka on Saturday, and across the country on Sunday.
 
The party's Secretary General Mirza Fakhrul Islam Alamgir made the announcement during a press conference at BNP chairperson's political office in Dhaka’s Gulshan area on Friday afternoon.

https://www.dhakatribune.com/bangladesh/politics/2020/11/13/bnp-announces-countrywide-protests-over-arrest-of-supporters-during-by-polls